Adrienne Bogen, former Vice President Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE’s Iowa field director, will leave the campaign in the wake of initial numbers from the Iowa caucuses that show Biden coming in fourth, Politico reported.

“We had precinct captains who didn’t know how to run a caucus. And a few didn’t even show. We lost friggin’ people on the second ballot of voting in the caucus! Someone’s head had to roll,” an upper-level staffer with the Biden campaign told the publication.

Bogen is the first post-Iowa departure from the campaign, Politico reported, citing several sources within the campaign.

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Although full results from the Iowa caucuses have not yet been made available, initial numbers showed the former vice president behind former South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBogeymen of the far left deserve a place in any Biden administration Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq A socially and environmentally just way to fight climate change MORE, Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) and Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.), with less than 16 percent of the raw vote.

Bogen was previously field director in the 2018 Florida Democratic gubernatorial primary for former Miami Beach Mayor Philip Levine, who lost to then-Tallahassee Mayor Andrew Gillum.

“The Biden campaign is desperate to blame everyone for his problems in Iowa — the state party, Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE, Adrienne — and that’s bullshit,” a friend of Bogen’s told the publication.

Since the preliminary caucus results, Biden has directly called out both Sanders and Buttigieg, accusing the former mayor of “saying the Obama-Biden administration was a failure” and saying Sanders would hurt down-ballot races of Democrats by associating them with socialism.

The Hill has reached out to the Biden campaign for comment.