Certainly that’s the case in the US. It would be suicide for US republicans adhere to their conservative values and drop subsidies, which would outrage all the farmers whose vote republicans rely on.

But why not the dems? No farmers vote for dems, so no loss there. But I suppose there would be enough meat-eating dems who would abandon their own party. Just like in California a politician tried to push a fuel tax and got voted out by both parties.