Comment by dragonwriter

No, that's not what “leftist" generally means, it means adherence to any of a broad grouping of anti-capitalist ideologies (the more widely recognizable being the various forms of socialism and communism). It overlaps a little bit with the progressive wing of the Democratic Party in the US, but beyond that is mostly outside of the US major party system. The only people who use “leftist" to describe a superset of the Democratic Party also use “socialist” and “communist” in the same way.