HARRISBURG — Republican lawmakers in Pennsylvania on Monday unveiled sweeping changes to the conduct of elections through a proposed constitutional amendment, the latest turn in a partisan power struggle over elections in the wake of former President Donald Trump’s baseless claims that last year’s presidential contest was rigged against him.

The Republican-penned measure passed the House State Government Committee on party lines, 15-10. One provision would substantially toughen Pennsylvania’s existing identification requirements for a registered voter to cast a ballot, both in-person and by mail.

The just-unveiled wording comes amid months of partisan fighting over disputed or gray areas of Pennsylvania’s election law, as well as efforts by Republicans to expand voter identification requirements, limit ballot-return options and investigate voting machines, ballots and more from last year’s presidential election.

To amend the state constitution, a proposal must pass both chambers of the state Legislature twice, once each in consecutive two-year sessions, before going to voters in a statewide referendum. The earliest this measure could see a referendum is spring 2023.

The measure would newly require the signature of someone voting by mail to be matched to their signature on file and require a voter to provide a government-issued ID every time before they vote.

That would eliminate provisions in existing law that allow the use of government checks, paychecks, utility bills and bank statements that are current, as well as student IDs and employee IDs.