As encouraging as these numbers are, it’s important to remember that the People fired the Republicans four years ago, and that the manifest horribleness of the Democrats, although it may lead to a temporary electoral victory, won’t put the full weight of the People behind a GOP majority, at least not until they do something constructive - which is unlikely.
It’s tough for Repubs to do something that is reported favorable when:
A) You have a minority in DC
B) The media lies about Republicans daily and covers up for Dems
C) Angry voices are ready to shoot first and ask questions later at any sign of Republicans doing something that offends someone else, or is not enough right-wing, too much right-wing, etc.
In short, we and the media over-criticize Republicans and under-criticize Democrats.
Given that, the poll numbers are stunning.