Wisconsin governor’s race pits Trump versus Pence in one of four state primary contests Tuesday

Former Vice President Mike Pence is squaring off Tuesday against his old boss, President Trump, in a proxy battle of their endorsed rival candidates in Wisconsin’s gubernatorial Republican primary.

Mr. Pence is backing former Lt. Gov. Rebecca Kleefisch, and Mr. Trump has endorsed construction company owner Tim Michels. An Emerson College poll last week showed Ms. Kleefisch with a 2 percentage point lead — a statistical tie. 

Wisconsin is a battleground state that will likely play an important role again in the 2024 presidential election. Mr. Trump, who is weighing a third run...