This 60-second animation shows how divided Congress has become over the last 60 years
Of course it worsened visibly with Reagan.
Incidentally, I mildly disagree with OP’s analogy. Yes, the wheel is turning further to the right, yes, the democrats aren’t doing enough to stop or even wheel it back, but there’s no spring coil in the wheel, it wouldn’t snap back by itself if you removed the blue from the picture. That’s bullshit.
I don’t think it has to be funny? That said I find the ratchet analogy entirely incorrect: