Analysis | Redistricting Map Tracker: A Detailed Look at the U.S. Housing Map of 2022

The march to the 2022 midterm elections is underway, as states work to complete their new congressional maps following the 2020 Census. As of December 23, 29 out of 50 states have settled on the boundary for 241 of the 435 U.S. House of Representatives districts. Every state there is another process to draw the map and state legislators or independent committees will need to approve the new map before the spring primaries begin.

Democrats narrowly control the U.S. House of Representatives, so both parties will work hard to roll out precincts in their favor. Republicans have drawn favorable lines in Texas, North Carolina and Ohio. Democrats control fewer counties overall but have used Illinois and Oregon to gain profit so far.

Multiple state legislatures are approving competitive elimination map favors more solid Republican or Democratic districts. The approved maps are facing legal challenge that could delay their use or lead to court-mandated changes. In the final redistricting cycle, legislative deadlocks and legal challenges resulted in many counties eventually being determined by the courts.

Explore the map

The Washington Post is using the number of Trump and Biden voters in the old and new county boundaries, according to data gathered by HQ Decision Desk, to show how the counties have changed politically. As more states finalize their maps, we’ll add them to this page to provide a more complete picture of what to expect in midterms.

Look up your address to see if county boundaries will change in your community, or click on our recommended counties and switch between the old and new lines.

The map above shows which states have approved the map to date, paired with the most detailed presidential election results available from 2020. The darkest red areas represent constituencies. election or county where Donald Trump won more votes than Joe Biden. In the darkest blue areas, Biden won more votes. The yellow districts are the most politically divided in the country – the presidential vote share for these areas is less than five points.

While Democrats do well in 2020 at the presidential level, these results are not necessarily predictive of how counties will vote in 2022. There are also counties on the current map that voted. for opposition parties for the president and the United States House of Representatives.

Harry Stevens contributed to this report.