The difference between R’s and D’s is not surprising.
D’s in congress are pretty radical and dutifully toe the line on all issues the teachers union, planned parenthood and the hard greens want.
R’s in congress are partly conservative and partly assistant democrats and as a group have done a very poor job of actually advancing issues their voters care about like freedom of speech, gun rights, not spending so much money, border security, hollowing out of our manufacturing capabilities, destruction of the middle class, etc.
The assistant democrat lock on our party is kept in place by massive establishment R spending out of DC in primaries and refusing to support conservatives financially in the general election.
So it isn’t surprising that Republican voters are very skeptical of their reps in congress.
They always say this and polls will show Congress has a lower approval rating than the President.
Fake News...Fake Polls.