The Socialist Party of America suffered a split in 1919 as a result of several factors. First and foremost was the sitting National Executive Committee declaring the election results for the next NEC null, as it would've handed control of the party to the Left Wing. Additionally the NEC also overturned a vote by the party membership on the Third International, wherein the rank and file voted for affiliating with the International while the NEC wanted to remain unaffiliated. This culminated in the NEC expelling several language federations and the entirety of several state parties from the Socialist Party. From 1919 to 1920 the Socialist Party's membership dropped from nearly 105,000 to 27,000.
What if the NEC had instead abided by the votes? Now the Socialist Party, though damaged by the Wilson terrors, had recovered from the first split in 1912 where the membership dropped from an all-time high of 118,000 to 96,000. However by 1919 the Party seemed to have recovered in membership once again rising above 100,000 members for the first time since 1912. Had the party not lost a large amount of the rank and file to the Workers and Communist Labor Parties it would be in a much stronger position heading into the 1920s, not collapsing into a few urban strongholds. What would the effects of a stronger Socialist Party in the 1920s and 1930s be?