I mean at least from what I've seen of it so far DSA is a fairly good choice, as I think for a party to be really progressive and represent the working class people it needs to be run democratically with party members actually having a voice and vote on what the party does. Which so far most other parties tend to follow the normal party strategy with party leadership and candidates making choices about what policies they want which just seems like a path to another Democratic party down the line that is disconnected from the people.

I think if anything though fragmentation isn't really the problem with breaking past local wins. I think it's more that the higher up you get the more corporate money starts to have a large impact and the harder and more support you need to run a grass roots campaign. The higher up you get the harder it becomes to reach out directly to voters through door knocking and events and the more advertisements and mass media campaigns tend to have influence which is where corporate money thrives. I think the way around this outside of campaign finance reform is building up that local support so you can have those local candidates that have already done outreach directly with their local constituents provide support and endorsement towards electing people at higher levels.