I can tell you right now what the majority of you are going to find when you return, depending roughly on the age and number of people on your friends list. Supporters of the party you just claimed to switch to will pipe up with a friendly and celebratory "About time you wised up!" They'll be followed by those who will act as if you have personally offended them by turning traitor. From there, completely without your input, the entire thing will devolve into a downward spiraling political debate. The longer you wait to chime in, the worse it will get, until people start blocking and unfriending each other in a butthurt ragequit on par with sheltered MMO players. If they could, they would teabag your corpse on their way out.
"Fuck you. You deserve to die for your views on taxes."
Because it is a game. These people have an arsenal of ready-made talking points, and counters to their opponents'. And they're always looking for a chance to play -- even the most casual mention will make them hunch over their keyboards and hear RPG battle music in their heads. Offhandedly, you point out, "Oh, wow, it looks like a few politicians are fighting for a big raise in minimum wage." Which is followed by "Yeah, while they're at it, why don't they just replace the flag with a swastika, and pool all of our money together into one big community pot? This isn't even America anymore. It's Nazi Germany."