Edit- y’all are getting salty. Clearly I agree with Lenin that revolutionaries should work in reactionary parliaments. But that is not the same as the DSA who think electoralism is the key to meaningful change, and not a combination of legal and illegal strategies.
That, and Bolivia and Venezuela have not actually yet escaped from capitalism, both still have majority private sector economies. In other words it’s still an open question whether electoralism “worked” to overthrow capitalism, but they have made major gains.