for context: i support a cross between market socialism, welfarism and georgism under a party-union/minarchist government (a small-enough government where the political parties work with the unions). i think that minarchism is a required step in a democratic dictatorship of the proletariat.
my socialist views are therefore a fusion of libertarian market socialism and de leonism and such.
77 members in 2006 is a mass organization to you? Also I don’t think they are active since 2006
they had a national convention in 2007 apparently, the last one that is recorded
there’s also the Industrial Workers of the World which has ties to De Leonism (but is NOT a political party, but close enough)
I am pretty sure that IWW is a revolutionary unionist org, which makes it opposed to de leonist peaceful reformism