Ohio Gov. Mike DeWine, a Republican, has signed into law a congressional map that creates 15 new districts in the state, but anti-gerrymandering advocates are slamming the map saying it was drawn to keep a Republican stronghold in Ohio.

The plan has 12 seats that either heavily favor or lean in favor of Republicans. That's 80% of the districts in a state that voted for former President Donald Trump with 53% of the vote in 2020.

Voter rights groups say Republican lawmakers went out of their way to carve the map in a way that gives them an advantage.