By Chris CasteelStaff writerccasteel@oklahoman.comRep. Kendra Horn launched her first campaign ad on Wednesday, a day after easily winning the Democratic nomination in the 5th Congressional District, as two Republicans vying for their party’s nomination prepared for a two month runoff campaign.Horn, of Oklahoma City, seeks to distance herself from her party in the ad and counter Republican attacks trying to tie her to House Speaker Nancy Pelosi and New York Rep.Read more on NewsOK.com