PRINCETON - New Jersey Senate President Steve Sweeney says he plans to compel senators to vote on an override of Gov. Chris Christie's veto of legislation that mandates law enforcement agencies be notified when a potential gun-buyer seeks to expunge mental health records.

Sweeney said Monday the vote would be held Oct. 22 and he plans to use procedural authority requiring all senators to vote. That could mean state police would retrieve any lawmakers who skip the vote. The district of a Republican sponsor who abstained during a test vote includes Princeton.

If the override succeeds, it would be a first for the Democrat-led Legislature during Christie's two terms.

The Senate came close on this measure, but Sweeney postponed the vote hoping to win over Republicans.

The legislation passed unanimously in June.