"In the past three weeks voters in Indiana, West Virginia and Oregon respectfully disagreed with Secretary Clinton," Sanders’ spokesperson Michael Briggs stated on Thursday. "We expect voters in the remaining eight contests also will disagree. And with every national and state poll showing Sen. Sanders doing much, much better than Secretary Clinton against Donald Trump, it is clear that millions of Americans have growing doubts about the Clinton campaign."
Earlier on Thursday, Clinton said in a media interview that she will be the Democratic Party’s nominee for the US presidency in November’s general election.
A national poll released on Thursday revealed that Clinton has fallen more than five points behind Trump nationally among likely voters.
In recent months, dozens of nationwide polls have shown a double-digit lead by Clinton gradually shrinking, with Trump having eliminated his rival candidates for the Republican nomination.