I don't buy this argument. Republicans came out and voted for Romney. This election was decided by women and minorities in the end. What can you do to change that? Nothing. The Democrats are just going to run with the bogus "war on women" narrative because it works, despite being all lies. I suppose you can start nominating complete socially liberal Republicans to help put these scare tactics to rest, but guess what then you seriously are going to alienate your base on nearly every front.
Minorities are an impossibility. Without saying anything racist I'll just say there is no way Republicans will ever appeal to them over Democrats, not when entitlements are involved.
The electorate is changing, and fast. By 2050 whites are on schedule to be the minority, but it will be here much faster if Obama "rewards" latinos with amnesty, AKA immigration reform in his 2nd term like he promised them.
Conservatives don't stand a chance again in an national election. Four years is a long time, and Obama has it to make more people dependent on the government, dramatically change the electorate demographic, and bust out as many government power grabs imaginable. I honestly don't expect the GOP to be able to defeat Joe Biden in 2016 with what Obama has in store over the next four years.