They only act stupid but they're not. If they act stupid and terrible things happen, the idiots that vote for them will continue their support. Very few would back up a candidate or party that said "My objective is to screw up this entire country!!!" But then again, we are talking about leftists here and they've always hated this country.
Look at our country today. 30% and higher gasoline prices thanks to what they did. The border in the worst shape in over 20 years all in a quest to make whites a minority in this country. Inflation like we haven't seen in decades. Americans taking shots, wearing masks, being forced to take experimental vaccines against our will, and now we have people from over 100 countries going to Mexico to cross into our country with God knows what kind of new covid variants as we try to fight this thing.
That's not the sad thing. The sad thing is, if Trump and Biden had a new presidential race today, Trump may win, but not by a huge margin.
The politicians are smart. It's the voters that are stupid.