I don't even talk politics with my family or friends. I don't want to deal with their BS as they aren't the type to understand that a person can have an opinion different from their own. I do the Queen thing, smile, nod and wave while secretly thinking their total asshats (this is what my paternal grandmother would do, as well - but she'd get sick of it and turn off her hearing aid).

Just go eat some leftovers. That will make things better. Happy Birthday. I will mail the present to your house closer to the time you plan to arrive home.