By Chris CasteelStaff Writerccasteel@oklahoman.comU.S. Rep. Kendra Horn, the Oklahoma City Democrat who scored an upset victory in November, collected nearly $378,000 in the first three months of this year for her re-election campaign as Republicans made her one of the top targets in the country. Horn had total receipts of $377,581, and she ended the quarter with $365,961 in the bank. It was the highest fundraising total in the seven-person Oklahoma congressional delegation, eclipsing even the amount raised by U.S.