Overview
The losing internal current of Bolshevism that had the best diagnosis of how the winning current would fail, the worst record at translating that diagnosis into operational politics of its own, and the longest run of cadre-quality theoretical work of any twentieth-century socialist tradition: the political identity built on being right about Stalin and then unable to build anything large enough to act on the rightness.
Also known as: Global Revolutionary Socialist
History
Trotskyism is the losing internal current of Bolshevik Marxism after 1924, and the losing is most of the story. Trotsky's The Revolution Betrayed (1937) and the founding of the Fourth International in 1938 are the formal break documents: the moment at which the tradition stopped being a faction inside Bolshevism and became a separate political identity defined by what it had been right about. Across the 1920s Leon Trotsky led the Left Opposition inside the Russian Communist Party against Stalin's consolidation of bureaucratic power. He lost the inner-Party fight by 1927, was expelled that year, exiled in 1929, founded the Fourth International from exile in 1938, and was assassinated by a Stalinist agent in Mexico City in August 1940. The doctrinal core that emerged from this losing trajectory has three pieces. Permanent revolution, developed from the 1905 revolution and elaborated across the 1920s, holds that revolutionary breakthroughs in less-developed economies cannot stabilise without international extension; Isaac Deutscher's Prophet trilogy is the standard sympathetic history of how Trotsky read this position out of Marx's framework against Stalin's deviation. Revolutionary internationalism, against Stalin's socialism-in-one-country, follows directly. And the analysis of the Soviet state as a 'degenerated workers' state' rather than as authentic socialism is the move that made Trotskyism possible as a separate tradition; it is also the move whose empirical defensibility has been contested for ninety years and counting. The rival diagnosis inside the same broad anti-Stalinist Marxist family is Council Communism's harder claim, that the Soviet state was never a workers' state in any meaningful sense and the degenerated-versus-state-capitalist dispute is internal to a shared failed framework. Both are anti-Stalinist Marxisms born in the 1917-23 revolutionary wave, framing the same empirical record from rival angles.
The post-1945 period turned Trotskyism into a fragmented international tradition. The Fourth International split repeatedly across the 1950s, 1960s, and 1970s and produced rival currents: the United Secretariat, the International Committee, the Workers' Revolutionary Party tradition, the Spartacist current, and many others. Specific Trotskyist organizations had moments of real political influence inside larger left coalitions. The British Militant tendency's entrism inside the Labour Party across the 1970s and 1980s shaped left-Labour vocabulary for a generation; Tony Cliff's state-capitalist theory of the Soviet Union (developed inside the British SWP tradition) became the most influential analytical bridge between Trotskyism and Democratic Socialism in the Anglosphere left. The French Lambertists in the 1960s, the American Socialist Workers Party at its mid-century peak, various Latin American currents had analogous reach. The pattern of these moments is informative. Trotskyist organizations have been good at producing disciplined cadre, careful theoretical work, and influence inside larger left coalitions. They have been bad at building durable mass parties of their own.
What survives today is a network of small but internationally connected organizations. The Socialist Equality Party (US, UK, Germany, Australia, and elsewhere), the various Mandelite currents in Europe, the British Socialist Workers Party in its pre-2013 form, the Argentine PTS, the French Lutte Ouvrière, and parallel groups across most countries maintain organizational continuity with the post-war tradition. The Argentine PTS has won parliamentary representation. Lutte Ouvrière contests French national elections with a real worker base. The tradition is also influential in academic Marxism, in journalism (Jacobin in its more Trotskyist-influenced moments, the World Socialist Web Site as the most active contemporary Trotskyist publication), and in contemporary anti-Stalinist socialist organising more broadly. If you want to read a single work by someone trained inside this tradition that gives a fair picture of what it actually contains, start with Deutscher's three-volume Trotsky biography. Then decide what you think.
Key Thinkers
The Russian revolutionary and theorist whose synthesis defined the tradition.
The Belgian economist whose Marxist Economic Theory (1962) and Late Capitalism (1972) were the most rigorous post-war Trotskyist economic analysis.
The Palestinian-British Trotskyist whose state-capitalist theory of the Soviet Union (developed in the 1940s) split the British and international tradition.
The American Trotskyist who led the US Socialist Workers Party through its mid-century peak and whose History of American Trotskyism remains the standard internal history.
The French Trotskyist philosopher whose contemporary work attempted to renew the tradition for post-Soviet conditions.
Key Texts
Trotsky's comprehensive history, written in exile.
Trotsky's analysis of the Stalinist deformation; the canonical text of the tradition's anti-Stalinist position.
The founding document of the Fourth International; lays out the tradition's strategy of transitional demands.
Mandel's economic analysis of the post-war capitalist boom and its underlying contradictions.
Deutscher's three-volume Trotsky biography remains the standard sympathetic history of the tradition's founding figure.
Modern Manifestations
Contemporary Trotskyism survives as a network of small but internationally-connected organizations. In Latin America, the Argentine PTS has won parliamentary representation and built significant union influence; the Brazilian PSTU and various smaller currents maintain organizational presence. In Europe, the French Lutte Ouvrière contests elections and maintains substantial worker-base presence; the British Socialist Workers Party (in its pre-2013 form) and various successor groups maintain academic and journalistic influence. In the United States, the Socialist Equality Party, the smaller Spartacist current, and various successor organizations to the Socialist Workers Party tradition carry the inheritance forward. Internationally, the World Socialist Web Site provides the most active contemporary Trotskyist publication.
Real-World Debates
Trotskyism's transitional-demands strategy proposes immediate political programs that, taken seriously, exceed what capitalism can deliver. The contemporary tradition has been developing this for current conditions; the empirical track record remains mixed.
The orthodox Trotskyist position is that 1989-1991 represented capitalist counter-revolution against a deformed-workers'-state that retained socialist potential; the revisionist position (associated with the state-capitalist tradition around Tony Cliff) treats the Soviet states as never having been socialist. The argument remains live.
Trotskyism has a long tradition of "entrism" (operating inside larger reformist parties to build revolutionary influence). The British Militant in Labour, the French Lambertists in the Socialist Party, and various contemporary cases have produced both substantial influence and substantial disciplinary expulsions.
The tradition has consistent anti-imperialist commitments; its position on specific conflicts varies (the Spartacist League founded by James Robertson in 1966 was sympathetic to Soviet positions during the Cold War; the SWP traditions have been more critical of all major powers). Contemporary Trotskyism is divided over the post-2022 Ukraine war and Israel-Palestine, with different organizations taking different positions on Russian aggression and Hamas attacks.
Trotskyism developed the most rigorous theory of united-front politics (working alongside reformist organizations on specific demands while maintaining political independence). The contemporary tradition continues to use the framework; the practical implementation has been variable.
Criticisms & Blind Spots
Strongest Critique
The Trotskyist tradition produced what most observers across the broader Marxist family treat as the most rigorous anti-Stalinist body of theoretical work the twentieth century left generated - Trotsky's Revolution Betrayed and History of the Russian Revolution, Deutscher's Prophet trilogy, Mandel's Late Capitalism, Cliff's state-capitalist theory of the Soviet Union, the broader transitional-program analytical framework - and the surviving organizations have supplied disciplined cadre and theoretical infrastructure that contemporary academic Marxism and journalism still draw on. The strongest critique of Trotskyism comes from inside the broader Marxist family rather than from outside it. The standing internal challenge, articulated by writers like Robin Blackburn and Perry Anderson, is that the tradition has been organizationally productive at building cadre and analytically productive at theoretical work but has consistently failed to translate either into political consequence at the scale the tradition aims for. After eighty years, the surviving Trotskyist organizations remain small, fragmented, and electorally marginal across almost every country. There is something the tradition is not doing, or is doing wrong, that other left traditions (social democracy, broader Marxist-Leninist parties in the global south, the various Pink Tide formations) have done better. The harder version of the critique grants the analytical achievements (the Stalin critique, the permanent-revolution theoretical work, the transitional-demands framework) and asks whether the organizational form Trotskyism has settled into is part of the political failure rather than the political strength. Small disciplined cadre organizations with strict doctrinal coherence are good at preserving political knowledge across hostile decades. They are bad at growing into something larger, because the discipline that preserves the knowledge is the same discipline that drives away the people you would need to recruit to scale.
Blind Spots
The most expensive blind spot has been the gap between organizational rigour and political traction. The tradition has produced disciplined cadre, careful theoretical work, and durable international connections. It has not produced sustained political coalitions at the scale required to challenge capital. After ninety years of effort across dozens of countries, this is an empirical pattern, not a temporary setback, and the tradition's contemporary defenders mostly handle it by treating it as a function of unfavorable conditions rather than as a function of the political form itself. A second blind spot is why the post-1968 New Left, the ecological movements, the feminist movements, and the racial-justice movements have generally found the tradition's style alienating. The Trotskyist organizations of the 1970s and 1980s were largely unable to absorb these movements without conflict, and the conflict has tended to produce splits rather than synthesis. What specifically could be revised in the tradition's presentation, organizational form, and theoretical priorities to make it accessible to contemporary movements without diluting its political content is a question the tradition has not honestly engaged. A third blind spot is the tradition's relationship to actual workers in the actual contemporary economy. The Argentine PTS and Lutte Ouvrière have done better here than most, but the broader pattern is that Trotskyist organizations are recruiting and reproducing through universities and professional-class networks more than through workplaces, and the tradition has not done the analytical work to honestly engage what that means for a tradition whose self-conception is built on the working class as the revolutionary subject.
Internal Tensions
The deepest tension inside Trotskyism is the state-capitalist versus deformed-workers'-state assessment of the Soviet Union. The Cliff state-capitalist position has been more empirically defensible since 1989, when the Soviet system collapsed and the predicted political reawakening of a still-existing workers' state did not happen. The orthodox 'deformed workers' state' position retains intellectual force inside the surviving Trotskyist organizations, partly because conceding it would undo a lot of doctrinal architecture. The split is operational, not just theoretical, and continues to divide the international tradition in the same way it did in the 1940s. A second tension is electoralism. Some Trotskyist organizations contest elections seriously (the Argentine PTS, the French Lutte Ouvrière). Others treat electoral campaigns as agitational tools rather than as means of taking office. The electoralist current has been more visible politically and has produced more cadre development through actual political contests. The agitational current has been better at maintaining doctrinal purity, which Trotskyist traditions tend to value more than the political results would seem to justify. A third tension, less often discussed openly, is over what counts as success. The tradition has been good at being right about things in retrospect (the Stalinist deformation, the collapse of the Soviet bloc, the limits of social-democratic reformism inside neoliberalism). Being right and being effective are different problems, and the tradition has shown a tendency to treat the first as adequate when the second is what political work is actually for.
Reading List
Trotsky's 1937 anatomy of how the Soviet bureaucracy emerged and what it meant. The single most important book in the tradition; the analysis of how a workers' state could degenerate without ceasing to be one (or, the contrary case, the analysis whose category Tony Cliff later rejected) is the load-bearing argument the rest of the tradition extends or attacks.
Trotsky's 1932 three-volume narrative of 1917, written in Turkish exile from documents he had on hand. Long, but the chapters on the dual-power period (and on Trotsky's own role) are by an unusually self-conscious participant-historian; the prose is what made Trotsky readable outside his own movement.
Deutscher's 1954-1963 three-volume Trotsky biography (Armed, Unarmed, Outcast), written by a former Polish Trotskyist who had broken with the movement but kept its analytical vocabulary. The standard sympathetic-outsider history; the second volume (the political defeat) is the one most worth the time.
Cliff's 1948 statement of the heterodox 'state capitalist' analysis of the Soviet Union, against the orthodox 'degenerated workers' state' position. The argument that split the Fourth International and founded the British SWP tradition; whether you accept it or not, you cannot understand the post-war Trotskyist landscape without it.
Mandel's 1972 economic analysis of the long post-war boom and its underlying contradictions, written by a Belgian Trotskyist who was also a working academic economist. The most rigorous Marxist economics produced inside the tradition; useful as evidence that the cadre-quality analytical work is not a myth.
The transcript of the 1937 Dewey Commission hearings in Coyoacán, where John Dewey and a panel investigated Stalin's Moscow Trials accusations against Trotsky. Strange reading: a former Soviet commissar defending himself in pragmatist-American legal language against absent prosecutors. The single best document for sensing what Trotsky was like as a thinker in person.
Related Ideologies
Trotskyism is the losing internal current of Bolshevism after 1924; Trotsky's The Revolution Betrayed (1937) and the founding of the Fourth International (1938) are the formal break documents that mark the split from Stalin's consolidated Bolshevism.
Both share anti-bureaucratic Marxism and a 'deformed workers' state' diagnosis of the Soviet trajectory; Rosa Luxemburg's The Russian Revolution (written 1918, published 1922) anticipates by fifteen years Trotsky's own critique.
These two believe in constant social progress, though one through reform and the other through revolt.
The two value shared duties, though they define those duties differently.
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