ists and als, tives

as in commun, fasc, liber, left, anarch, conserva

-usually are smaller portions of the political spectrum,
ists don't last long, as in communists and fascists.

als are still feeling their oats and are trying to fit into their niche.

tives are the middle of the road.

cans and crats

as in demo and republi
they have been around and they win because of seniority

of course no rules are hard and fast. adjust affliation as you may deem necessary.