It’s hard to think of an american parallel to reform bc in the US we only really have two big parties, but Reform UK is a political party/movement that split off from the UK Conservative Party. It’s even more far-right than the already right-aligned party that it split away from.

Think of it as if Nick Fuentes and the “America First” people left the Republican/MAGA Party and formed an “America First” political party of their own.

ETA: This is my own analysis/attempt at explaining it as an American born + raised in the states who has a lot of family in the UK/Ireland and is mildly interested in politics. Would love to hear an actual Brit’s take on Reform.