HARRISBURG (AP) - 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.

Gov. Tom Wolf, a Democrat, in June vetoed a wide-ranging Republican bill that was opposed by all but one Democratic lawmaker. With a Senate committee preparing to consider a narrower, bipartisan bill, some of those disputed provisions from the GOP’s partisan bill are ending up in the proposal to amend the constitution.

A governor has no veto power over it.

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.

Voters also must show ID only when voting in a particular precinct for the first time, while mail-in voters are not required to provide a photo ID when applying for a ballot or to insert a photocopy of an ID when mailing in their ballot.

Democrats have strenuously opposed toughening the voter ID law, calling it an effort to take away the right to vote and noting that there is no track record of in-person voting fraud in Pennsylvania.

Another provision would make the office of the state’s top election official, the secretary of state, into an elected position with four-year terms. Currently, the position is a gubernatorial appointment in Pennsylvania.

Nearly every state has a secretary of state, and the position is an elected job in three-fourths of them.