Some Senate Republicans supported Senate Majority Leader John Thune’s promise to hold a vote on an amended election security bill. Thune, R-S.D., on Wednesday called for adding a voter ID mandate to a bill requiring proof of citizenship to vote in a federal election. “At some point, we’ll have that vote,” Thune said of the Senate bill. My understanding is that they are still modifying the bill,” Thune told reporters Wednesday. They have made similar arguments about voter ID requirements and other measures to prevent voter fraud.