If endorsements are any indication, there’s Joe-mentum among Michigan Democrats.

Joe Biden’s crushing win in the South Carolina primary last Saturday, followed by his string of victories in the Super Tuesday contests, has led to a number of Michigan Democrats lining up behind the former vice president in the days leading up to Michigan’s March 10 presidential primary.

That includes Gov. Gretchen Whitmer, who not only endorsed Biden on Thursday but agreed to be one of four national campaign co-chairs.

“I’m going to be a part of the strategic conversations around everything from going into the convention to being a surrogate to vetting of a running mate for Joe,” Whitmer told MLive on Thursday.

Whitmer to give Michigan a voice in Biden campaign strategy

Others who have endorsed Biden this week include former Gov. Jennifer Granholm; former U.S. Sen. Carl Levin; U.S. Rep. Haley Stevens, D-Rochester Hills; U.S. Rep. Elissa Slotkin, D-Holly; U.S. Rep. Brenda Lawrence, D-Southfield; State House Democratic Leader Christine Greig, and the United Food and Commercial Workers Union Local 876 and 951 in Michigan.

The endorsements have cited Biden’s experience, his “passionate pragmatism” and the potential that he can be someone who unites the country.

Her constituents “are not looking for lip service or promises that can’t be delivered,” Steven said in a statement. “They’re looking for a leader who knows what their challenges are, and who rises above politics to deliver.”

The endorsements are occurring as the race for the Democratic nomination largely narrows to Biden and U.S. Sen. Bernie Sanders, although U.S. Rep. Tulsi Gabbard, D-Hawaii, also remains a candidate.

On Friday, Sanders was endorsed by Detroit Action, a grassroots organization that advocates for people of color.

“I think it’s clearly a two-person race,” said Richard Czuba, founder of Glengariff Group, which conducted a poll last weekend for Detroit News/WDIV-TV. The survey of 600 likely Michigan Democratic primary voter showed Biden with a 7-point lead over Sanders in Michigan.

The poll offers a sharp contrast to previous surveys of Michigan voters taken when the field was larger, which found Sanders with a similar lead over Biden.

Glengariff Group conducted the poll by surveying a set of 150 voters each day from Feb. 28 to March 2. Nationally, the Biden campaign had a turning point on Feb. 29, which Biden’s win in South Carolina, and Czuba said his staff could see the impact in Michigan, as Biden surged ahead in the final two days of polling.

“It really was one of the most dramatic shifts I’ve seen in such a short period of time,” he said.

Mark Grebner, a Democrat who operates Practical Political Consulting in East Lansing, said it’s clear that many Democrats are coalescing around Biden amid fears that Sanders, a self-identified democratic socialist, could become the Democratic nominee.

“There’s this fear that Bernie is going to screw this up, Bernie is going to cause us this terrible problem" by turning off moderate and older Democrats, Grebner said about the November contest against President Trump.

Sanders’ successes in the Iowa and Nevada caucuses and the New Hampshire primary has forced more moderate Democrats to recognize their need to consolidate support behind a single candidate, and that candidate has become Biden.

“We were divided into 10 little groups, each supporting a different candidate,” Grebner said. “Now we’ve gotten our act together and the decision has been made. We’re all behind Joe."

Grebner said he anticipating that Biden will easily win Michigan’s primary and will become the Democratic nominee.

“Everybody can think that it’s still an open question. But anybody who thinks that didn’t look at the results on Super Tuesday," Grebner said. “Look at those results hard.”

Biden won 10 of 14 states on Tuesday, including upsets in Minnesota, Massachusetts and Maine, where he didn’t campaign.

David Dulio, a political scientist at Oakland University, agreed that party leaders are banking on Biden being a better bet to defeat Trump.

“You’ve seen an incredible consolidation behind Biden," Dulio said. “I think that it’s a matter of the party trying to find their best chance in November.”

And beating Trump is the goal, numerous Democrats say.

“I’m really excited to see a narrowing of the field so that we can really focus on policy differences between the candidates," Greig said Thursday. “I support the vice president’s policies and what he’s proposing and i think it’s time to get behind one candidate and let’s get it going.”

She said the Biden campaign had been asking “awhile” for her endorsement, and as she saw the Biden bandwagon "coming together this week, I thought, 'Yeah, OK. it’s time to do it.”

Read more on MLive:

Bernie Sanders could seize second Michigan presidential primary win, this time as Democratic front-runner

Michigan Gov. Gretchen Whitmer endorses Biden, joining campaign as a national co-chair

Elizabeth Warren tells Michigan she’s the ‘woman to beat Donald Trump’ at Super Tuesday campaign rally

What happens if I voted for someone who dropped out of Michigan’s presidential primary?

What Michigan voters need to know about absentee ballots for March 10 primary