WASHINGTON — Hillary Clinton’s campaign Wednesday all but declared the Democratic race for president over, before voters in three dozen states go to the polls.

“We will steadily add to Hillary Clinton’s already sizable lead in delegates, and as we do, it will become harder and harder mathematically for Sen. [Bernie] Sanders to ever catch up,” Clinton campaign manager Robby Mook said in a memo to the press after Clinton won seven states on Super Tuesday.

Clinton’s delegate count is up to 1,052 — about half the 2,383 she needs to clinch the nomination. Sanders won four states and has 427 delegates.

“This lead is larger than any lead then-Senator Obama had at any point in 2008,” Mook added.

Clinton’s campaign conceded Sanders would probably win the majority of delegates in Nebraska and Kansas on Saturday, but said Clinton’s expected romp in Louisiana thanks to her strong support among African-Americans would still give her more delegates for the day.

The predictions had Sanders supporters saying not so fast.

They accused Team Clinton of trying to “spin” their way out of projected losses this weekend.

“They are trying to say the race is over before it starts,” said Dan Cantor, executive director of the Working Families Party that has been working to elect Sanders.

“The pledged delegate count could be wiped out by Sanders doing well in California and New York alone. That’s just spin, my goodness. In fact there’s a real race underway.”

Nina Turner, a Sanders supporter, compared Sanders’ underdog position to that of Obama’s in 2008 when he beat Clinton for the nomination.

“It was David versus Goliath,” Turner, a former Ohio state senator, told MSNBC. “David persevered in 2008 and David will persevere again in 2016.”

In recent days, Clinton has tried to pivot toward the general election and GOP front-runner Donald Trump, while barely mentioning Sanders.

Sanders, however, is turning up the pressure on Clinton to release transcripts of her paid speeches to Wall Street.

“We urge Secretary Clinton to share that extraordinary speech with the American people,” Sanders told a rally in Maine, where voters will caucus Sunday. “Tell us what you said behind closed doors to Goldman Sachs.”

Sanders has won a total of five states, to Clinton’s 10. He has the money to compete after out-raising Clinton $42.7 million to her $30 million in February.

The two will face off in a debate Sunday in Flint, Mich., to highlight the lead-contaminated water crisis there.

Sanders is counting on winning in Michigan Tuesday, where he hopes to appeal to automotive and manufacturing workers displaced by trade agreements.

But Clinton’s camp said it’s confident Michigan, with its 147 delegates, will end up in her column, as will Mississippi.