If the primary was being held in 2017, Kasich might have moved the needle. There were enough Republicans who had enough problems with Trump that they might have gone for any viable alternative.
But Trump has won over a lot of those Republicans, and a lot more have closed ranks around Trump after the Kavanaugh affair. Plus Kasich has shown his true colors on gun control, which is a red-line issue for many Republicans, myself included. John “You Don’t Need a God-Darn AR-15” Kasich won’t break 10% in any state, and will be out by Florida.
Alabama, 2 states held gubernatorial elections, New Jersey and Virginia