Labor hits congressional Republicans on voting to give 'Donald Trump a tax break'

The scale then collapses, clattering off-screen.

The ad is running nationwide on CNN and MSNBC. The group is also running versions of the ad slamming Sen. Dean Heller (R-Nev.) and Reps. Steve King (R-Iowa), Denny Rehberg (R-Mont.), Jim Renacci (R-Ohio) and Dan Lungren (R-Calif.) on local broadcast TV. The campaign has $280,000 total behind it.

All of the targeted Republicans are in close races.