Senate Democrats voted against advancing a bill early Saturday that would have required photo ID to cast ballots, leading to the failure of the measure. 

Under the bill, the Help America Vote Act of 2002 would be amended to require voters to show photo identification to vote.

The final vote was 52-46, which wasn't enough to pass it.

Speaking out against the bill on the Senate floor, Sen. Alex Padilla, D-Calif., said the bill is "stricter" than the rules in some states with voter ID laws.

Padilla said it would require voters to input a copy of their identification when voting by mail.