Rep. Max Rose, who represents Staten Island and part of Brooklyn, is campaigning to win reelection in New York City’s most conservative district by blasting Mayor Bill de Blasio, a fellow Democrat.

Rose, a first-term member of Congress, defeated Republican Rep. Dan Donovan in 2018 in the 11th Congressional District, rated an R+3 toss-up by the Cook Political Report. The seat has swung frequently between both parties in recent election cycles due to redistricting, retirements, scandals, and resignations.