(AP) – Gov. Jay Nixon has vetoed legislation that could have required voters to show photo identification and created an early-voting period in Missouri.

Nixon said he spiked the bill Friday because the photo ID mandate could have made it harder for the disabled and elderly to vote.

A proposed constitutional amendment on photo IDs and early voting still is set to appear on the 2012 ballot. But that measure only authorizes state laws on the two topics – it does not require them.

Nixon’s veto affects a separate bill that would have implemented the photo ID and early voting provisions.

The Legislature also passed a photo ID law in 2006, but the state Supreme Court struck it down as an infringement on the fundamental right to vote in the Missouri Constitution.