The nonprofit arm of the Congressional Leadership Fund is spending $150,000 on the effort, and it will reach "thousands of high-propensity swing voters."

The direct mail aspect of the effort attacks Brownley as a reckless spender during her time as state assemblywoman, and is designed to target voters still up for grabs before Nov. 7.

The radio ad charges Brownley is "out of touch," citing the pay raises she gave her staff that the ad says came in the midst of California's budget crisis.

"America is already sixteen trillion in debt. The last thing we need in Washington is another out-of-touch, big-spending politicians like Julia BrownleyJulia Andrews BrownleyWorst engineering failure in U.S. history made us safer GOP leaders prevent votes to ban federal spending at Trump businesses Dem whip asks Ryan to allow floor votes on DACA this week MORE," it says.

The race for California's 26th district is competitive --The Hill rates it as a toss-up, and both Democrats and Republicans have been spending there. AAN's expenditure there indicates they believe they can push Republican Tony Strickland over the top.