Soon Duckworth will be in a class by herself.
Duckworth told me she is expecting her second child, another girl, in late April, a few weeks after she turns 50. The birth will make Duckworth the nation’s first senator to have a baby while serving in the chamber.
Sen. Dick Durbin D-Ill., said in a statement, "I am proud to have her as my Illinois colleague and prouder still that she will make history by being the first U.S. Senator to have a baby while in office. I couldn’t be happier for her."
The other congressional births have all come while the female lawmakers were serving in the House.