Dean Phillips is the first prominent Democrat to launch an intraparty challenge against President Joe Biden.
Wait, who?
Phillips, a third-term congressman and multimillionaire from Minnesota, has little name recognition outside his home state and just a few months to not only introduce himself to voters, but persuade them to support him over the incumbent president.
Standing in the way of Phillips achieving the nearly politically impossible are a Democratic establishment and donor base that have largely united behind Biden.
Phillips has faced long odds before, though not of this magnitude. He became the first Democrat in more than 50 years to represent Minnesota's Third Congressional District, which encompasses suburbs west of the Twin Cities, when he won election in 2018.
Here's what you need to know about Phillips as he mounts his longshot campaign.
Wealthy upbringing
Phillips, 54, comes from wealth but wasn't born into it. Six months after he was born in St. Paul, his father, a U.S. Army captain, was killed in Vietnam. His mother, DeeDee, remarried Eddie Phillips, CEO of Phillips Distilling Company, who adopted him after the wedding in 1972.
Phillips describes his adoptive family as one of "great achievement and high expectations." His adoptive grandmother wrote the famous advice column, "Dear Abby."