The GOP should focus more on the non-Hispanic white voter than minorities. Romney won that vote 59-39. A few more percentage points and he would have won the election.
Historically, the white vote has been split about 50/50. The black “block” vote has helped to determine the outcome. When there is big black turnout, the Democrats win. When the Blacks stay home, the Republicans win.
In recent years, the white vote has been shifting Republican. Big minority and youth vote came out for Obama. But, will they do it again for a bunch of old white people? I don’t think so.
Unless the Democrats can get their people to the polls, the Republicans should win in 2016. Going after the minority vote won’t matter to the Republicans - with the minorities, you have to get them to the polls. I don’t see either the Republicans or Democrats getting a big minority turnout in 2016.
If that is the case, the fight should be over the group that traditionally turns out to vote - the white people. The Republicans have the advantage there. But, they must inspire them too. Nominating a GOPe candidate will not bring out a big turnout for the Republicans.