With Jeb Bush’s Backing, Ted Cruz Makes Push to Stop Donald Trump

In the wake of the results of the contests in Arizona and Utah, the dual-track primaries move forward to the next big test, Wisconsin, on April 5. But in the Republican battle, Senator Ted Cruz of Texas is spending time on Donald J. Trump’s turf for a second day in a row, as he tries to galvanize support in the establishment behind his candidacy.

Mr. Cruz’s day began with an announcement of support from Jeb Bush, the former governor of Florida who was the only candidate to spend extensive time battling Mr. Trump directly over many months. Mr. Bush’s endorsement of Mr. Cruz came as the Texas senator made overtures to his colleague, Senator Marco Rubio of Florida, to get behind his candidacy and possibly join him on a ticket.