North American Politics Headlines at 12:22 a.m. EDT

Disappointing results leave Sanders campaign at crossroads

The Latest: Washington state primary too early to call

At White House, insurers again pledge no-cost virus tests

Sanders, Biden cancel Ohio rallies over coronavirus concerns

Moderate Democrats see edge in challenges from progressives

Claire McCaskill transitions from Senate to television

Stakes rise for Sanders heading into Michigan primary

6 questions heading into next set of Democratic primaries

Edited Biden video portends social media challenges in 2020

Melania Trump cancels fundraiser, cites scheduling conflict