Proposals for a new Congressional map ran wildly off course for South Carolina Republicans this week.

Democrats joined a few Republicans on Tuesday in the state Senate to approve placing a new House district in the southeastern part of the state. This is different from the state House-passed plan, which placed the new district in the northeastern portion of the State, anchored in Horry County.

A three-judge panel will draw the new lines if the Legislature cannot agree on a map. That would likely lead to a substantially weaker map for the GOP. “We’re on a course to gridlock,” state Senate President Pro Tem Glenn McConnell (R) told the State newspaper.