Iowans who want to vote but aren't registered can cast a ballot under the state's Election Day registration law.

To take advantage of the law, people should go to their polling place Tuesday. To find a designated polling place, go to the secretary of state's website at .

At the polling place, unregistered voters must prove who they are and where they live. The easiest way to do this is to provide a valid Iowa driver's license.

Other identification also will be accepted, including a U.S. passport, U.S. military identification or a student identification issued by an Iowa high school or college.

Proof of residence can include a utility bill, paycheck, bank statement or a government document.

A registered voter can vouch for a person but must sign an oath.