PHOENIX — The Senate has amended an elections-related bill to reinsert criminal penalties and make other changes to a sweeping campaign finance bill Gov. Doug Ducey signed earlier this session.

Republican Sen. Adam Driggs of Phoenix sponsored the campaign finance overhaul and is now backing an amendment that would prevent candidates from making contributions to each other.

It also reinserts certain criminal penalties related to campaign finance violations and moves up the enactment date from the beginning of 2017 to the general election in November.

The Senate advanced House Bill 2297 on Friday. It still awaits a formal vote.

Democrats say the amendment makes some improvements but they still have concerns and have not had enough time to read through the changes.

Driggs did not offer an explanation for why he is offering the amendment.