Romney lost by less than 1% of the popular vote.
All we really need to do is change the vote of 5% of the Obama voters in the battle ground states.
Zero in on the ones that already the closest ideologically/culturally and focus on them like a laser.
We don’t have to take back 50% of the population.
It’s easier to get out 2% more Republican voters. They are already there. Just give them a candidate with some ideas they want to see implemented and they’ll vote for him.