The Republican Party is run by RINO’s, they are extremely comfortable being the minority party. Its all those pesky conservatives that bother them.
Very true.
If you look at the elections of 2006 and 2008 what you see is that the RINOs, or blue state moderate republicans, were decimated by the democrats.
This particular district was held by a RINO who lost to a moderate democrat in 2006, who was then appointed to the Senate. And a republican can't win the district back.
And it is not just the democrat's "Blue State Strategy" that is effective, but also the "Western Strategy" and the "Southern Strategy".