Democratic presidential candidate Andrew Yang Andrew YangBiden's latest small business outreach is just ... awful Doctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls MORE posted and later deleted a tweet questioning why Rep. Tulsi Gabbard Tulsi GabbardRepublicans call on DOJ to investigate Netflix over 'Cuties' film Hispanic Caucus campaign arm endorses slate of non-Hispanic candidates Gabbard says she 'was not invited to participate in any way' in Democratic convention MORE (D-Hawaii) was excluded from a video message filmed by a number of candidates running for the party's presidential nomination on Tuesday.

The video, posted Monday by the Democratic National Committee's (DNC) Twitter account, features Yang alongside a slew of other Democratic candidates for president, including Sens. Bernie Sanders Bernie SandersTrump, Biden will not shake hands at first debate due to COVID-19 Sanders tells Maher 'there will be a number of plans' to remove Trump if he loses Sirota reacts to report of harassment, doxing by Harris supporters MORE (I-Vt.) and Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.).

It's part of a fundraising push for the DNC's Democratic Unity Fund, which works to support whichever candidate wins the Democratic nomination following the primary. Gabbard is not among the candidates in the video.

In a now-deleted tweet, Yang wrote, "Where's Tulsi?"

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He followed up the message with an explanation, writing, "Just posted a tweet about a DNC video when I was unaware of the criterion used. That’s why we have teams around us - to let us know these kinds of things. Happy Holidays!"

DNC officials, when contacted by The Hill, did not specify what the requirements were for appearing in the video.

Gabbard failed to qualify for December's Democratic debate, and Yang himself lies on the verge of not qualifying for the Democratic debate in January following the DNC's decision to raise the requirements for participation.

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But the video has received some attention on social media since two other Democratic candidates who have yet to appear on stage in any of the debates, former New York City Mayor Michael Bloomberg Michael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE and former Massachusetts Gov. Deval Patrick Deval PatrickRalph Gants, chief justice of Massachusetts supreme court, dies at 65 It's as if a Trump operative infiltrated the Democratic primary process Top Democratic super PACs team up to boost Biden MORE, are both in the video.

Both Patrick and Bloomberg joined the race in November.

Updated at 4:45 p.m. on 12/25/2019