Republicans Ahead In House; Neck-to-neck In Senate

The battle for control of Congress is hanging in the balance as both the Democratic and Republican parties are neck-and-neck in the Senate while the latter is on course to regain majority in the House of Representatives. With four more results awaited, both parties have won 48 seats each in the 100-member Upper House. As results in the key races of Nevada, Georgia, Wisconsin and Arizona can go e