Is this the general case with the new flock of Republicans?
So far it's only the ones who've made some bold moves or decisions or embarrassed themselves.
This isn't isolated to GOPers, alot of Dems who were recently elected/re-elected have crappy approvals too. though you are right that the GOPers with the bolder moves are taking more flak.
Here in California, Gov. Brown has to deal with one of the most epic budget problems of any state in US history, and yet he has over 2-1 approvals.
Has Brown done anything yet? According to Wikipedia, "Brown is working on a budget that would shift many government programs from the state to the local level, a reversal of trends from his first tenure as governor". This seems like a pretty good way to retain popularity by tossing the hot potato to some other politicians.