Since there are 435 House seats contested every 2 years, there is no way anyone can keep track of all that is going on there.
But the general point remains..which is nominate a candidate who polls best in general. The classic case in point is Delaware, where republicans chose O’Donnell who was endorsed by Palin & Demint, over the other candidate (whose name escapes me at the moment) who was polling better and was more likely to win, but was considered a RINO. Instead we got senator Coons.
O’Donnell is yet another anecdote. We need to pick the most conservative candidate in the primaries. There are going to be mistakes like Moore and O’Donnell but is it purely hypothetical to say the RINO would have won in those cases. RINOs are attacked even more by the media and instead of fighting back like Trump they genrally cave.