By Cameron Joseph - 05/03/12 03:24 PM EDT
The ad is an emotional one — it features the father of Justin Bailey, a Marine who overdosed on prescription drugs given out by the Veterans Affairs doctor and who the bill is named after.
Berkley is locked in a tight race with Sen. Dean Heller (R-Nev.). The Las Vegas Sun's Jon Ralson reported that they are spending $45,000 to run the ad in Reno, a relatively small buy focused on the a swing area where Heller is from. Berkley's political base is in Las Vegas.