This election cycle is pretty meaningless. You have an entire wave of Republicans running against Obama, who is out in 2 years anyway. This sets the stage for a Democratic Bloodbath in 2016 when Republicans get to explain why in 2 years with a House and Senate majority they did nothing but fail to repeal Obamacare, obstruct Obama, and try and pass nothing but Abortion legislation, all while the policies Obama passed in his first 4-6 years increase in effectiveness and popularity. I mean, what do Republicans really have to complain about? Unemployment is dropping, the Deficit is shrinking very fast, Government employment is below GWB-era levels, and Economic Growth is good.
They will have no platform outside of "Gays are bad, abortion is bad, vote Republican!" This is also as minorities, women, and young adults all continue to favor Democrats, and as they get older and Republicans fail to adequately block them from from voting they will start to drown out the voices of racist old white people.