The Radical Democracy Party was an abolitionist and anti-Confederate political party in the United States. The party was formed to contest the 1864 presidential election and it was made up largely of disaffected Radical Republicans who felt that President Abraham Lincoln was too moderate on the issues of slavery and racial equality. John C. Frémont was nominated as the party's presidential candidate, with John Cochrane as his running mate. However, their campaign failed to gain momentum and, not wanting to act as a spoiler against Lincoln, they withdrew from the race in September.

John Charles Frémont or Fremont was an American explorer, military officer, and politician. He was a United States senator from California and was the first Republican nominee for president of the U.S. in 1856 and founder of the California Republican Party when he was nominated. He lost the election to Democrat James Buchanan when the vote was split by Know Nothings.