Rep. Tom Latham (left), Iowa Republican, has declined to run for the U.S. Senate seat being vacated by Democratic Sen. Tom Harkin. Others who might run are Reps. Bruce Braley (center), a Democrat, and Steve King, a Republican. (AP Photo/File)
Rep. Tom Latham (left), Iowa Republican, has declined to run for the U.S. Senate seat being vacated by Democratic Sen. Tom Harkin. Reps. Bruce Braley (center), a Democrat, and Steve King, a Republican, have shown interest in the seat. (AP Photo/File)
