Bernie Sanders Wins Maine Democratic Caucuses

Clinton and Sanders are in a state-by-state battle for the nomination.

Maine Democrats held 533 caucuses at approximately 400 locations across the state, and 30 delegates are at stake.

Sanders said Sunday on ABC's "This Week with George Stephanopoulos" that "we have a path toward victory" signaling, at least for now, that he is in the race for the long haul.

"We think we have an excellent chance to do well out on the West Coast in California, state of Washington, Oregon," he said. "We think we have an excellent chance to do well in large states like New York. We think we're going to surprise people here in Michigan."

ABC's Josh Haskell contributed reporting.