The Democratic senator from Illinois says she is six months along.
Sen. Tammy Duckworth, D-Ill., is pregnant with her second child and is set to be the first ever senator to give birth while in office.
Duckworth broke the news to Lynn Sweet of the Chicago Sun-Times, telling the political columnist that she is six months along and, just six weeks shy of turning 50, that she felt "great" about motherhood and the demanding role of being a senator.