The 2014 mid-term elections were the costliest mid-terms ever with total spending hitting $3.67 billion or $44/voter! The most expensive race was the NC senate race at $113 million, followed by the CO senate race at $97 million, the IA senate at $85 million and the KY senate race at $78 million. Mitch McConnell (R-KY), the new Senate Majority Leader, was the most prodigious fundraiser, nabbing $28 million for himself.