U.S. Congresswoman Tammy Duckworth is going to announce a 2016 Senate run on Monday, according to the Chicago Sun-Times. She'll be challenging the incumbent GOP Sen. Mark Kirk. Kirk is seen as vulnerable -- the race is expected to be competitive. Tammy, a wounded Iraq war veteran, currently represents the 8th Congressional district which is located in northwest suburban Chicago. Here's the story: http://www.washingtonpost.com/...