U.S. Rep. Tammy Duckworth's campaign says she raised a record $2.7 million in the most recent quarter for her closely watched bid to unseat Republican U.S. Sen. Mark Kirk.
The Illinois Democrat enters the contest's final months with $5.5 million cash on hand.
Kirk's campaign hasn't released his fundraising totals for the three-month period that ended June 30.
Democrats see Illinois as one of the party's best opportunities to pick up a seat and potentially retake the Senate in November.
Duckworth has raised more money than Kirk in each quarter so far this campaign cycle. She has eliminated his early lead in the amount of cash on hand, finishing the first quarter of 2016 with a $700,000 advantage.
Campaign Manager Kaitlin Fahey says her base of grassroots supporters is growing.