The Senate amendment to expand background checks on gun purchases is expected to come to a vote around 4 p.m. today.
With prospects already looking bleak, gun-control supporters lost two big potential Republican votes in the last 16 hours, as Sens. Kelly Ayotte (R-N.H.) and Dean Heller (R-Nev.) said they would oppose the measure, which needs 60 votes to pass.
As things stand Wednesday morning, 52 Senators are prepared to support the amendment; 41 Senators are opposed; and seven are undecided. That means at least one Senator would have to flip his or her vote on the measure, which was put forth by Sens. Pat Toomey (R-Pa.) and Joe Manchin (D-W.Va.).
We’ll be following the developments all day. Follow along below for the latest updates.
NOW WATCH: Briefing videos
Business Insider Emails & Alerts
Site highlights each day to your inbox.