I think you're spot on with radio and TV impeding the republican party from becoming a more moderate party full of popular ideas. When the candidates are afraid to challenge the Tea Party extremists, Rush Limbaugh, Bill O'Reilly, and others you know something is wrong.
I think we will see one of two outcomes over the next four years; either the republican party reevaluates itself and ditches some of its outdated social issues, or they will keep doing what they are doing, eek out a win in 2016 and then loose the following elections, loosing both the house and senate as a result of latching onto these outdated ideas.
I'm hopeful for the first, but I don't really expect to see that happen. I expect to see more of the same, hopefully at the very least their continued losses will allow the democrats to rebuild the social reforms the republicans have destroyed since Reagan. We'll see...