Tammy Duckworth (D-IL) endorsed Illinois Lt ... beating Republican incumbent Sen. Mark Kirk with 55% of the vote. It is predicted that whoever wins the Democratic nomination will likely win ...

Mark Kirk for the statewide post in 2016. A toy duck sporting a “Tammy Strong” T-shirt sits on a table during a party for U. S. Sen. Tammy Duckworth Tuesday at the Adler Planetarium.