In case you were wondering, the oil and energy industry are hedging their bets by funding both candidates (gee, what a surprise)—but not equally. Politico noted back in April that BP has favored Obama: 

BP and its employees have given more than $3.5 million to federal candidates over the past 20 years, with the largest chunk of their money going to Obama, according to the Center for Responsive Politics. Donations come from a mix of employees and the company's political action committees — $2.89 million flowed to campaigns from BP-related PACs and about $638,000 came from individuals.

We don't doubt that Big Oil has its money on the Republicans and Mitt Romney when push comes to shove. But we noted back in 2008 that the reigning petro-oligarchs were deftly playing both sides in the presidential race. The nature of the game is that no matter who gets in, the petro-oligarchs win. But a part of the game is that Romney gets to bait Obama as a Green Stalin for suggesting that some remnants of federal oversight over the oil industry be retained—which only causes Obama to capitulate yet further. In terms of actual policy on oil and energy, the difference between the two parties has been narrowing almost from the moment Obama took office, until today it is vanishingly small. From AP, Aug. 23: