Well, I only know how it tends to work in China, where the traditional calendar is used for cultural events such as festivals, while the Gregorian calendar is used for just about everything else, including domestic business. I assumed it’s the same in most modern cultures with a different traditional calendar, but maybe I’m wrong.
What they should do is push for voting reform. There are tons of proposals for voting systems that solve the two party stalemate and the issue of gerrymandering.
If they really wanted to stop the insanity of the Republican party, that’s what they would do. Until they do, they are complicit in it.