Decision 2008: Candidate Field as of now.

Here is another look at the candidates who are in the exploratory phase or have declared their candidacy.

Democrats:
Announced Candidates (Note: some haven't officially announced or filed with the FEC, but have stated they will run.
(D)Fmr. U.S. Sen. John Edwards (D-N. Carolina)
(D)Fmr. Governor Tom Vilsack (D-Iowa)
(D)Rep. Dennis Kucinich (D-Ohio)
(D)U.S. Sen. Chris Dodd (D-Connecticut)
(D)U.S. Sen. Joe Biden (D-Delaware)
(D)Governor Bill Richardson (D-New Mexico)
(D)Fmr. U.S. Sen. Mike Gravel (D-Alaska)

Potential Candidates
(D)Wesley Clark (D-Arkansas)
(D)U.S. Sen. Hillary Clinton (D-New York)
(D)U.S. Sen. John Kerry (D-Massachusetts)
(D)U.S. Sen. Barack Obama (D-Illionis)
(D)Rev. Al Sharpton (D-New York)

Still possible but not likely
(D)Fmr. Vice President Al Gore (D-Tennessee)
(D)Fmr. Governor Mark Warner (D-Virginia)

Republicans:

Announced Candidates (Note: look at other party's announced)
(R)U.S. Sen. Sam Brownback (R-Kansas)

Exploratory Committee Candidates
(R)Fmr. Governor Jim Gilmore (R-Virginia)
(R)Fmr. NYC Mayor Rudy Giuliani (R-New York)
(R)Rep. Duncan Hunter (R-California)
(R)U.S. Sen. John McCain (R-Arizona)
(R)Rep. Ron Paul(R-Texas)
(R)Fmr. Governor Mitt Romney (R-Massachusetts)
(R)Fmr. Governor Tommy Thompson (R-Wisconsin)

Potential Candidates
(R)Fmr. U.S. House Speaker Newt Gingrich (R-Georgia)
(R)U.S. Sen. Chuck Hagel (R-Nebraska)
(R)Fmr. Governor Mike Huckabee (R-Arkansas)
(R)Fmr. Governor Frank Keating (R-Oklahoma)
(R)Fmr. Governor George Pataki (R-New York)
(R)Rep. Tom Tancredo (R-Colorado)