She advocated a Department of Peace and embraced an economic justice agenda to fix damage she claimed was done by so-called trickle-down economics. "With caucuses and primaries now about to begin, however, we will not be able to garner enough votes in the election to elevate our conversation any more than it is now", Williamson wrote in a message to supporters.
Williamson announced her campaign last April, and unveiled a platform that included reparations for minorities historically affected by slavery, and creating a Cabinet-level "Department of Peace". "And yes ... love will prevail".
At a July debate, Williamson caught Americans off guard when she offered a clear-eyed denunciation not just of Trumpism, but an inability of Democrats to tap into the frustrations everyday Americans have about economic and social injustice.
Williamson, who took controversial positions on immunization and other health issues, became a leading candidate on Twitter in the second debate - when she warned that Trump was bringing "this dark psychic force of collective hatred" " in the country.
Williamson did not talk like a politician.
This made her one of the few Democratic candidates who was more unpopular than popular among members of her own party - generally speaking, not a good place to be. Despite penning 13 books, four of which were New York Times bestsellers, she came into the race with little political name recognition compared to her competitors.
Williamson had one of the smallest campaigns and did not qualify for any of the presidential debates after the summer.
At the July debate at Detroit's Fox Theatre, she gave MI a shout-out and called out racism, saying that the Flint water crisis would never happen in an affluent white community.