How redistricting in 6 states could affect who controls Congress

Multiple states across the country are engaged in fights over redistricting -- and the outcomes could help determine whether Democrats or Republicans have control of the House in 2024.

The redrawing of congressional boundary lines happens every 10 years, following the completion of the census. Those results shift how many representatives each state gets depending on their population and which parts of each state get grouped together into districts that each elect someone to the House.

Depending on how those lines are drawn, districts can be designed to unfairly favor one party over the other based on information like historical voting patterns, voter demographics and voter registration. (Some states use independent groups during redistricting to decrease the chance of this.)

Three years after the last census, the dust is far from settled on congressional maps in some parts of the country. As the 2024 election approaches, a series of high-profile court cases has brought redistricting in the spotlight once again. Here is a closer look at how the process is playing out in six states that have to -- or could soon -- redraw their maps.