One-fourth of Americans live in swing states

Supporters of Republican presidential candidate Mitt Romney wait for him to leave his campaign headquarters in Boston, Sunday, Sept. 9, 2012. (AP Photo/Charles Dharapak)

Roughly one in four Americans live in swing states.

Using the most expansive list of states that are contested in this year’s presidential election, more than 75 million Americans are swing-state residents.

Out of a total U.S. population of more than 312 million, that is 24 percent.

The states are: Colorado, Florida, Iowa, Michigan, Nevada, New Hampshire, North Carolina, Ohio, Virginia and Wisconsin.

Not every list of swing states includes North Carolina and Michigan, however.

If those two states are dropped, the number of swing-state residents drops to 56 million, or just 18 percent of the U.S. population.

Either way, a supermajority of Americans live in states that simply are not a factor in the presidential election.