Democrat Bob Kerrey and Republican Deb Fischer are battling for a U.S. Senate seat in Nebraska. The Fischer camp is disputing poll figures indicating that Mr. Kerrey has significantly closed the gap between them. The race had been considered a lock for Republicans eager to regain control the Senate. (Associated Press)

Democrat Bob Kerrey and Republican Deb Fischer are battling for a U.S. Senate seat in Nebraska. The Fischer camp is disputing poll figures indicating that Mr. Kerrey has significantly closed the gap between them. The race had been considered a lock for Republicans eager to regain control the Senate. (Associated Press)