Iowa congressman Bruce Braley told supporters in an email that he was “ready to go” and is forming a committee to run for the U.S. Senate. Braley, a Democrat from Waterloo, is hoping to succeed retiring Democrat Tom Harkin and is the first major candidate to announce his intention to run for the seat since Harkin said in January he would not seek reelection. The Quad-City Times has more on Braley’s announcement: