By Chris CasteelStaff writerccasteel@oklahoman.comU.S. Rep. Kendra Horn raised nearly $584,000 from April through June, outpacing two Republicans who hope to take on the freshman Democrat next year. Horn, D-Oklahoma City, reported second quarter receipts of $583,954 from individual donors and political action committees (PACs), according to a campaign finance report filed Monday with the Federal Election Commission. Horn raised about $378,000 in the first quarter.Read more on NewsOK.com