WASHINGTON _ Bernie Sanders is losing decisively in key states, in danger of falling irreversibly behind in the delegate race, and even facing new calls to wind down his candidacy to avoid inflicting lasting damage on the Democratic Party.
And the presidential primary isn't about to get any easier for him.
A string of defeats Tuesday, including in the crucial battleground state of Michigan, has put Sanders' 2020 campaign in its most precarious position yet, pushing a candidate who recently looked like a front-runner dangerously close to the edge of viability.
