Voter ID laws adopted in 10 states representing nearly half of the 270 electoral votes needed to win the presidency will make it harder for hundreds of thousands of poor and minority Americans to vote and could decide the outcome of the 2012 election.

The 11 percent of eligible voters who lack the photo ID needed to participate in the upcoming election must travel to a government office to obtain one and, in some instances, must buy documents such as birth certificates and marriage licenses, which will be difficult for some to afford.

Travel distances and office hours also can be impediments. The most absurd example might be the city offices in Sauk City, Wis., which are open only on the fifth Wednesday of every month during a year in which only four months have a fifth Wednesday.

Other findings contained in the Brennan Center for Justice’s new report on the subject, “The Challenge of Obtaining Voter Identification,” appear below.

— Posted by Alexander Reed Kelly.