Here is a market price prediction: If Newt Gingrich gets elected, gasoline will be $2.50 per gallon. That is his prediction, by the way, and not ours. And it is not altogether certain that $2.50 will be the exact target price, because Gingrich said that he picked $2.50 as a "stabilizing price for capital investment reasons." According to the former House Speaker, that number "could easily go down to $2."Gingrich took a play out of Michele Bachmann's playbook. Before she dropped out of the 2012 GOP presidential race, her pledge was to get gas prices below $2.00 per gallon. Her reasoning was that "a dollar in 2011 should be the same as a dollar in 1911. A dollar should be worth a dollar."So, how scary is it for the commodity sector that the...