Is the Republican party the most right-wing major party in the world?

[Okay, maybe Mike Johnson is a competent parliamentarian.]

Of rather more importance is quite how right-wing the Democratic Party is these days. Much more so than most people realise.

Yeah. It's not that America has a major right-wing party that's more appropriate to as wormyguy said Eastern Europe, Latin America, or highly sectarianized parts of Western Europe than anything else, it's that America's major left-wing party is in fact a right-wing party.