JEFFERSON CITY, Mo. (AP) – Democratic U.S. Sen. Claire McCaskill is far outpacing potential Republican rivals in fundraising.

Thank you! Over 30,000 donors in Q3. 88% gave less than $100. Avg contribution was $59. Again shattered #MOSen records raising almost 3 mill

— Claire McCaskill (@clairecmc) October 12, 2017

McCaskill’s campaign announced Thursday that she’s raised $2.9 million between July and the end of September. She spent close to $1 million and had more than $7 million in cash on hand.

Missouri Attorney General Josh Hawley, the leading Republican candidate, raised about $820,000 and has $782,000 in cash to spend, although he’s only been allowed to fundraise since he opened a campaign committee in early August.

The 2018 Missouri Senate race likely will be expensive and highly competitive. McCaskill is among 10 Senate Democrats running in states won by Trump, and the Missouri race could be crucial in control of the Senate, where the GOP currently has a narrow majority of 52 seats.