Representatives Corrine Brown and Mario Diaz-Balart filed a lawsuit asking that the amendment concerning congressional districts be declared invalid.

Separately, a coalition of groups including Common Cause, the League of Women Voters and the National Council of La Raza announced it would file its own challenge on the legislation's being signed into law.

Jeff Miller Republican Jeff Miller Republican Florida's new 1st district voting age population is 77.6% White (single race), 12.9% Blacks (includes multirace), 4.3% Hispanic (excludes Hispanic Blacks), 0.3% Hispanic Blacks (includes multirace), and 5% other races [6] Republican incumbent Jeff Miller, who had represented Florida's 1st congressional district since 2001, ran for re-election and secured the Republican nomination unopposed.

William Cleave Drummond, II ran for election as a write-in candidate.

[7] Organizations Steve Southerland Republican Steve Southerland Republican Florida's new 2nd district voting age population is 68.5% non-Hispanic Whites (single race), 23.5% non-Hispanic Blacks (includes multirace), 4.4% Hispanic (excludes Hispanic Blacks), 0.3% Hispanic Blacks (includes multirace), and 3.3% other races (non-Hispanic).

Cliff Stearns Republican Ted Yoho Republican Florida's new 3rd district voting age population is 75.8% non-Hispanic Whites (single race), 12.9% non-Hispanic Blacks (includes multirace), 6.7% Hispanic (excludes Hispanic Blacks), 0.3% Hispanic Blacks (includes multirace), and 4.3% other races (non-Hispanic).

Stearns was upset in the primary by Ted Yoho, a large-animal veterinarian from Gainesville.

[6] Republican incumbent Ander Crenshaw, who had represented the 4th District since 2001, ran for re-election.

[31] Organizations Corrine Brown Democratic Corrine Brown Democratic Florida's new 5th district voting age population is 49% non-Hispanic Blacks (includes multirace), 36.2% non-Hispanic Whites (single race), 10% Hispanic (excludes Hispanic Blacks), 1.1% Hispanic Blacks (includes multirace), and 3.7% other races (non-Hispanic).

[32] Gerald Nyren announced plans to run as a Libertarian Party candidate.

[6] Organizations Mica defeated Adams in the Republican primary with 61 percent of the vote.

The district's inhabitants voted overwhelmingly for President Barack Obama, preferring him to John McCain 60-39%.

In addition, the district will contain a plurality of whites, at 43%, followed by Hispanics and blacks, who will make up 41% and 12% of the population, respectively.

Republican Daniel Webster, who had represented the 8th district since January 2011, sort re-election.

[6] John Russell, an acute care nurse practitioner, had announced prior to redistricting that he would run as an independent in the 11th District.

Republican Vern Buchanan, who had represented the 13th since 2007, ran for re-election in the 16th after deciding against running for the U.S.

[6] Prior to redistricting, former state representative Keith Fitzgerald had announced he would seek the Democratic nomination to challenge Buchanan.

[45] Connie Mack IV, who had represented the 14th district since 2005, will run for the U.S. Senate rather than for re-election.

Ted Deutch, who had represented the 19th district since April 2010, ran for re-election[115] The new 21st district voting age population is 66.6% non-Hispanic Whites (single race), 17.6% Hispanic (excludes Hispanic Blacks), 10.6% non-Hispanic Blacks (includes multirace), 0.6% Hispanic Blacks (includes multirace), and 4.5% other races (non-Hispanic).

[116] Labor unions Allen West Republican Lois Frankel Democratic Republican Allen West, who was first elected to represent Florida's 22nd congressional district in 2010, sought re-election in the new 18th district.

DNC Chairwoman Debbie Wasserman Schultz who had represented the 20th since 2005, ran for re-election.

[6] Due to redistricting and constitutional amendments passed in 2010 restricting gerrymandering, the race was considered a toss-up.