The reason for falling oil prices explained (maye)

Gas here went from 2.58 at 0730 of election day to 2.75 by 1700. that's 18 cents during one day. I has gone back down a bit to 2.70 since then, not back to where it was just a week ago. When the price increases 18 cents in less time than the polls are open, I can't help but think that politics has some play in pricing, somehow. I understand supply and demand but can't link these price changes to supply and demand.. at least the way it was taught to me in business school.