Duckworth's office made the announcement Monday. She will be sworn in on Thursday afternoon to represent Illinois' 8th Congressional District.
The Democrat was elected in November to the U.S. House, defeating first-term Republican Congressman Joe Walsh. The contest in Chicago's suburbs was closely watched nationwide.
Duckworth has worked for both the U.S. and the Illinois veterans affairs departments. She lost both legs and severely damaged her arm in Iraq while serving as an Army helicopter pilot.
