JUST IN: Ex-US Sen. John Warner, five-term #Va Republican who backed @HillaryClinton over @realDonaldTrump in ‘16, breaks w/ party again, endorsing @JoeBiden: ‘We’re going from an untested president to a thoroughly tested president. We’re not taking a gamble as we did w/ Trump.’

— Jeff E. Schapiro (@RTDSchapiro) March 1, 2020