Gas prices could influence how some Americans vote in November. Below is a look at the year-over-year difference in average pump prices in swing states that could determine the winner of the presidential election.

State Current avg gas price Y-O-Y difference

Colorado $3.509 + 1 cent

Florida $3.631 - 2.1 cents

Iowa $3.653 + 5.8 cents

Michigan $3.942 + 25.8 cents

Nevada $3.554 + 1.3 cents

New Hamp $3.647 - 5.1 cents

N. Carolina $3.604 - 5.7 cents

Ohio $3.785 + 22.8 cents

Pennsylvania $3.666 - 1 cent

Virginia $3.529 1.8 cents

Wisconsin $3.907 +23.3 cents

Source: AAA, Wright Express and the Oil Price Information Service.