The GOP didn't realize that White Men are declining as a share of the electorate and population.
There we go again with the left playing the race card. Even if Republicans reach out to minorities, they're still going to be called racists by the media and left.
No the Republicans thought they would be a little more turnout than there was(hence I mentioned Romney's pollster thinking the same thing.) At the same time they underestimated minority turnout.
Keep in mind White Women voted for Romney too as a block. Its minority women that Republicans have a major problem with as a voting block.