Whether John Kasich remains in the race after tonight will only impact Marco Rubio as Trump and and Cruz appear poised for the convention regardless, Charles Krauthammer said tonight.

And once Trump and Cruz enter the convention, “it would be hard to reach down to a Kasich or a Rubio or anybody outside the party at that point,” Krauthammer said on Tuesday’s Special Report.

“Let’s say [Kasich] does well and Rubio doesn’t,” Krauthammer continued. “He will take a few of the delegates away from Trump. In that sense he helps Cruz.”

“To me, of course, the lead indicator here was a result in the North Mariana Island,” Krauthammer joked. ”I think the way that goes, you really get a sense of — I asked myself, What’s happening in the South Islands? And do we even own them? I suspect they’re probably Japanese.”