A Republican-backed proposal that would require Indiana voters to submit more identification information to obtain mail-in ballots has been endorsed by the state Senate. Senators voted 36-12 on Monday in favor of a bill that would require voters submitting a paper application for a mail ballot to include a photocopy of a government-issued identification card or at least two ID numbers, such as their 10-digit driver’s license or the last four digits of their Social Security. Supporters of the action say it is aimed at increasing public confidence in elections. Opponents say the additional requirements may discourage some people from voting. House members approved a similar bill in February.