Former White House press secretary Sean Spicer Sean Michael SpicerKellyanne Conway to leave White House at end of month Pro-Trump duo Diamond and Silk launch new program on Newsmax TV The Hill's 12:30 Report - Presented by Facebook - Supreme Court's unanimous decision on the Electoral College MORE said Tuesday that it would be "near impossible" for some 2020 Democratic candidates to turn down participating in an independent debate hosted by Fox News.

"The biggest threat to the DNC’s plan will likely come from an unexpected source: Fox News. The DNC has excluded Fox from hosting a debate, which means there is no incentive for Fox to work within the DNC framework," Spicer wrote in a Wall Street Journal opinion piece.

Spicer also noted that the network had already held events with Democratic candidates, including a town hall with Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.)

"It may not be long before Fox announces it will host a debate independent of the DNC. With 2.4 million prime-time viewers, it would be near impossible for many candidates to say no, especially those near the bottom looking to break out," Spicer wrote.

ADVERTISEMENT

The Democratic National Committee (DNC) announced earlier this year that it would be barring Fox News from hosting a Democratic presidential primary debate because of the network’s reportedly close ties to the Trump administration.

The DNC announced in December a dozen primary debates split between 2019 and 2020 to accommodate a field that already includes 20 presidential contenders. It also has set criteria, including the number of small donors and polling, to qualify to participate in a debate.

Spicer argued that because the Democratic party "is on track to have many more than 20 candidates" qualify for debates, some lower-profile candidates may be willing to appear on Fox-hosted debates outside of the DNC's structure to get more coverage.

Democratic candidates are not blocked from appearing on Fox News for interviews or town halls.

Sanders had significant success with a town hall on Fox, which drew more than 2.55 million viewers.

South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegThe Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield MORE and Sen. Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.), both Democratic hopefuls, are set to appear in Fox News town halls in May.