Most members of the political right are in the middle class, and in 2012 Romney won the middle-class vote (but the bottom two income levels voted overwhelmingly for Obama).
The left's idea of helping the middle class is to suck trillions of dollar out of the economy, hand it over to the government, and let the government dole the money out as it sees fit (after, of course, the government eats up at least 30 cents out of every dollar on overhead).
The more money the government drains out of the economy, the less money businesses have for expansion, raises, bonuses, R&D, and promotions. That's why nearly all European economies are stagnant, and the few exceptions are nations that have tempered their socialism by adopting key conservative policies that have helped offset the socialism.