SACRAMENTO — California is emerging as a key front in the increasingly intense U.S. congressional redistricting battle, with Democrats reshaping districts as both parties compete for an advantage ahead of the November midterm elections.

The changes have affected Republican Rep. Kevin Kiley's district, illustrating how redrawn congressional boundaries can dramatically change which communities are grouped together and which voters determine a seat's future.

The broader fight began after Republicans in several states moved to redraw congressional maps in an effort to strengthen their position in the House. Democrats in California and other states have responded with plans of their own.

The result is an increasingly national map-drawing competition, with both parties looking for additional seats before voters head to the polls.

For candidates and voters, redistricting can have major consequences. A familiar district can disappear, communities can be split between multiple seats, and incumbents may suddenly face a much different electorate.

The California battle highlights how the fight for control of Congress in 2026 is being shaped not only by candidates and campaigns, but also by the boundaries of the districts themselves.