Who Owns Congress?

2010's Most Expensive Races

How expensive can these House and Senate races get?

Read also: The rest of this special report, a note on sourcing, and MoJo's daily political coverage.

Below, this year's most costly Congressional races.

Senate

Florida Charlie Crist (I) vs. Marco Rubio (R) et al

$37.7 million

Connecticut Linda McMahon (R) vs. Richard Blumenthal (D)

$30.3 million

California Sen. Barbara Boxer (D) vs. Carly Fiorina (R)

$29.5 million

Arizona Sen. John McCain (R) vs. J.D. Hayworth (R)

$27.4 million

Nevada Sen. Harry Reid (D) vs. Sharron Angle (R)

$22.7 million

House

Tennessee District 8 George Flinn Jr. (R) vs. Roy Herron (D)

$7.3 million

Minnesota District 6 Rep. Michele Bachmann (R) vs. Tarryl Clark (D)

$7 million

New York District 1 Rep. Timothy Bishop (D) vs. Randy Altschuler (R)

$6.6 million

South Carolina District 2 Rep. Joe Wilson (R) vs. Rob Miller (D)

$6.6 million

Florida District 22 Rep. Ron Klein (D) vs. Allen West (R)

$5.9 million