Sen. Thom Tillis (R., N.C.) announced recently that he will not be running for reelection in 2026. A stalwart of the establishment wing of the Republican Conference, he joins the interesting club of Republican Senators who hung it up after two terms — Rob Portman, Pat Toomey, and Bob Corker. How should he go about his last 18 months in the Senate? I worked with those two-termers on their way out the door, and earlier in my career worked for another Senator, Jeff Flake, who opted not to run for reelection wi...