With Ohio\u2019s May 3 Senate GOP primary barely two weeks away and no clear frontrunner, J.D. Vance's rivals are mounting an all-out effort to head off a potential endorsement from former President Donald Trump, per our colleagues Natalie Allison, Meridith McGraw, Alex Isenstadt and Daniel Lippman. Trump seems intent on picking a horse in all the big GOP primaries. But several candidates are bunched together in polling in Ohio, making this one a real roll of the dice.\nListen to Playbook Deep Dive: Biden\u2019s pollster on the recipe for how to \u2018not get our a---- kicked\u2019 in the midterms\nRaghu Manavalan is the Host of POLITICO's Playbook.Jenny Ament is the Executive Producer of POLITICO Audio.