New Jersey Democratic Rep. Andy Kim announced Saturday that he’ll run next year against Sen. Bob Menendez in the wake of the senator’s indictment and refusal to step down.

“After calls to resign, Senator Menendez said ‘I am not going anywhere.’ As a result, I feel compelled to run against him. Not something I expected to do, but NJ deserves better. We cannot jeopardize the Senate or compromise our integrity,” Kim posted on X, the platform previously known as Twitter.

Kim has been representing New Jersey’s 3rd Congressional District, which includes suburbs east of Trenton, since 2019. He won reelection last November by more than 10 percentage points.