It's Trump vs. Cruz in Ohio and Pa. Senate races

As Republican primary voters get closer to the polls, it’s beginning to feel like mid-2016 again: Donald Trump and Ted Cruz are on opposing sides.

The former president’s late backing of J.D. Vance in Ohio and Mehmet Oz in Pennsylvania is directly at odds with the Texas senator’s favored candidates in two brutal Senate primaries that conclude next month. Cruz endorsed his candidates before Trump — Josh Mandel in Ohio and David McCormick in Pennsylvania — and didn’t exactly plan to go toe-to-toe with his 2016 presidential rival. But Trump’s...