Genevieve Winslow of Milwaukee belongs is a member of the Greatest Generation. In 1948, at age 20, she married Alex Winslow, who fought in the Battle of the Bulge. Beginning a year later, at 21, she’s voted in nearly every election since.

Now, she worries she might get turned away at the polls in the future.

It is a common concern among older Americans living in states that have enacted photo ID requirements for voting. Passed by Republican state legislatures as a hedge against voter fraud, the laws have been assailed by critics who say they discriminate against the elderly and minorities.