Everytown for Gun Safety, the group founded by former New York City Mayor Michael Bloomberg, released a new ad Tuesday that called on three Republican senators to support legislation to close federal loopholes that allow many domestic abusers to purchase guns.

The ad will air on cable television in Washington, D.C., and on network stations in New Hampshire, Arizona and Nevada, according to a release.

Versions of the ad specifically call on  Republican Sens. Kelly Ayotte (N.H.), Jeff Flake (Ariz.)  and Dean Heller (Nev.) to back a bill authored by Sen. Amy Klobuchar (D-Minn.) to expand the current federal law -- that prohibits those who are convicted of domestic abuse from buying or owning a gun --  to include stalkers and non-married partners.

The National Rifle Association opposes the Klobuchar bill.

The spot comes ahead of a Senate Judiciary Committee hearing on Wednesday that will examine the “next steps” of the Violence Against Women Act and how to improve the law to further protect women from abusive partners.
Bloomberg has pledged to spend $50 million of his own money this year on the effort to pressure lawmakers to tighten gun laws.