Longtime Obama Ally David Plouffe Endorses Hillary Clinton

Barack Obama's 2008 campaign manager David Plouffe endorsed Hillary Clinton Saturday, just ahead of a key Democratic Party event in Iowa.

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DES MOINES, Iowa — Barack Obama's 2008 campaign manager David Plouffe endorsed Hillary Clinton Saturday, just ahead of a key Democratic Party event in Iowa, where Obama's campaign first showed major signs of breaking past the thought-to-be inevitable Clinton.

David Plouffe.William B. Plowman / NBCU Photo Bank via Getty Images

“Now, to be honest, during the most intense days of the 2008 primary, I would never have imagined writing this piece. And I doubt Team Clinton felt any differently about me,” Plouffe wrote in a post on Medium.

It’s a major nod of support from the old Obama high command, especially as some — notably former top strategist David Axelrod — continue to hold out support and occasionally take shots at the Democratic presidential front-runner.

RELATED: Hillary Clinton’s Long, Difficult History With Iowa

"We’ve come a long way. Still, eight years after that historic night in Des Moines, there’s so much left to do," Plouffe wrote, referring to the annual Jefferson-Jackson dinner, which will occur again Saturday night. "And Americans still need a president who will wake up every day, prepared to overcome any obstacle on their behalf. Hillary Clinton should — and I believe will — be that president."

Plouffe, now in the private sector, reportedly played a behind-the-scenes roll helping Clinton prepare for her presidential campaign. But his official nod could help encourage supporters of Obama — who remains hugely popular among Democrats — to rally behind Clinton.

It also serves to further underscore the close ties between the Obama and Clinton camps, and comes after Vice President Joe Biden decided against a bid this week.

Meanwhile, his endorsement comes as Clinton has a enjoyed the best two weeks of her campaign, after a strong performance at the first Democratic debate in Las Vegas and during a hearing before the House Select Committee on Benghazi.

Read more at MSNBC.com