John McConnell Wolfe Jr. (April 21, 1954 – September 4, 2023) was an American attorney and perennial political candidate. He was the Democratic nominee for Tennessee's 3rd Congressional District in 2002 and 2004. He was best known for having challenged President Barack Obama for the Democratic Party's 2012 presidential nomination. He ultimately emerged as the most successful challenger, receiving the second-highest number of delegates (23) and popular votes (116,639).

Wolfe made an unsuccessful bid in 1998 for the Democratic congressional nomination in Tennessee's 3rd district. In 2001, he ran for Mayor of Chattanooga, Tennessee, and received 2.8% of the vote in that race, which was won by Bob Corker. In 2002, he lost a second congressional bid in the 3rd District to then-U.S. Representative Zach Wamp, and garnered 34% of the vote as the Democratic nominee. Wolfe faced Wamp again in a 2004 congressional rematch, and was again defeated, this time acquiring 33% of the vote. In 2007, he ran unsuccessfully in a special election for a Tennessee State Senate seat.

Wolfe was fined $10,000 in 2008 after he failed to file a fourth-quarter campaign finance disclosure report for his 2007 State Senate campaign with the state as required by law. In 2010, he ran for Congress in Tennessee's 3rd district, and lost to Chuck Fleischmann 57%-28%.

Wolfe also made two runs for the Democratic presidential primaries, in 2012 and in 2016.

In 1998 Wolfe ran, unsuccessfully, in the Democratic primary for Tennessee's 3rd congressional district.

In the 2002 race for Tennessee's 3rd district, Wolfe was the Democratic challenger to incumbent Republican Zach Wamp. Wolfe ultimately lost to Wamp.

Below is the result of the general election

In 2004 Wolfe again was nominated to run against Wamp for Tennessee's 3rd congressional district. Wolfe lost again. Wolfe, however, was able to garner a greater number of votes but a smaller percent of the vote in 2004 than he had in 2002.