FACTBOX-Likely U.S. presidential candidates in 2008@

(Reuters) - Here are some of the declared and potential presidential candidates for the Republican and Democratic Party nominations for the 2008 election.

In alphabetical order:

DEMOCRATS:

Announced candidates:

Chris Dodd, U.S. senator from Connecticut.

John Edwards, former senator and the vice presidential nominee in 2004.

Dennis Kucinich, U.S. representative from Ohio and 2004 presidential candidate.

Tom Vilsack, former Iowa governor.

Formed exploratory committee:

Hillary Rodham Clinton, U.S. senator from New York and former first lady.

Barack Obama, U.S. senator from Illinois.

Other expected or possible candidates:

Joseph Biden, U.S. senator from Delaware and chairman of the Senate Foreign Relations Committee.

Wesley Clark, retired U.S. Army general and 2004 presidential candidate.

John Kerry, U.S. senator from Massachusetts and the presidential nominee in 2004.

Bill Richardson, New Mexico governor.

REPUBLICANS:

Formed exploratory committee:

Sam Brownback, U.S. senator from Kansas.

James Gilmore, former Virginia governor.

Rudolph Giuliani, former New York mayor.

Duncan Hunter, U.S. representative from California.

John McCain, U.S. senator from Arizona and 2000 presidential candidate.

Mitt Romney, former Massachusetts governor.

Tom Tancredo, U.S. representative from Colorado.

Tommy Thompson, former Wisconsin governor.

Other expected or possible candidates:

Newt Gingrich, former U.S. House of Representatives speaker.

Mike Huckabee, former Arkansas governor.

Chuck Hagel, U.S. senator from Nebraska.