Florida voters in 2010 approved constitutional amendments by nearly 2-to-1 margins that forbade state legislators from coordinating with political parties or favoring incumbents when drawing new congressional districts.
So what did lawmakers in Tallahassee do? The Republican leaders in charge of drawing new maps coordinated with Republican Party consultants to protect Republican incumbents.
Some Democrats complain that Republicans in recent decades have had the edge in House races because GOP state legislatures have been better at the gerrymandering game. Except that may not be true.
Some political experts believe there's an easier explanation, and perhaps a tougher one for Democrats to overcome: Voters supporting Republican House candidates, they say, are spread over more congressional districts than those who support Democrats. It's that simple. It's merely a matter of geography.
Redistricting is forcing a handful of congressional incumbents of the same party to run against each other in primaries. On March 6, Rep. Marcy Kaptur defeated fellow liberal Democrat Rep. Dennis Kucinich in Ohio.
And next Tuesday, two conservative Republicans square off in Illinois.
The scene is the newly drawn 16th Congressional District, which covers mostly rural territory in the northern part of the state, curving around the suburbs and exurbs of Chicago, from the Wisconsin border north of Rockford to the Indiana border east of Kankakee.