Four Senate Republicans broke ranks on Thursday to thwart an effort to pass the SAVE America Act, a sweeping election overhaul.

Republican Senators Susan Collins, Lisa Murkowski, Mitch McConnell, and Thom Tillis joined the Democrats to strike down an effort to attach the bill to the nearly $70 billion package geared toward funding Immigration and Customs Enforcement (ICE) and Border Patrol.

It is yet another blow to the Trump-backed election package, which has been stalled in the Senate for months after the House passed a version of it in February on a near party-line vote.

If passed, the legislation would require voters to show proof of identity, such as a passport or birth certificate, when registering to vote.

The same four Republican senators thwarted the first attempt in April, which was sponsored by Senator John Kennedy.

This is a developing story. More to follow.