Democrats hold slight edge in contest to control Senate

By Richard Cowan and David Morgan WASHINGTON (Reuters) - The Democratic Party was very slightly favored to wrest control of the U.S. Senate from the Republican Party in Tuesday's elections, according to some analysts, with the final outcome to determine how difficult a challenge the next president will face in passing legislation. The Democrats' hopes of making major gains in the Republican-controlled U.S. House of Representatives and Senate had been dampened in the closing days of the election