derechizar

To shift politically to the right — almost always used reflexively, derechizarse, of a party, government, or public opinion moving toward right-wing positions: el partido se derechizó en la última década. It's a common word in political journalism, the mirror image of izquierdizar(se).

• El partido se derechizó tras perder las elecciones. — The party shifted to the right after losing the election.
• Los analistas hablan de un electorado que se derechiza. — Analysts talk of an electorate shifting rightward.
• La crisis económica derechizó el discurso político. — The economic crisis pushed political discourse to the right.

Using derechizar transitively for a whole country or population as if a single actor were doing it to them — it's most natural as a reflexive shift (derechizarse) that a party or public opinion itself undergoes.