AP analysis shows Texas and California redistricting efforts could mess with rare partisan balance

As Texas Republicans and California Democrats redraw U.S. House districts to their advantage ahead of next year's elections, they're potentially disrupting a rare partisan balance in American politics.

The 220-215 majority that Republicans won over Democrats in last year's elections almost perfectly aligns with the share of the vote the two parties received in districts across the U.S., according to an Associated Press analysis. Although the overall outcome was close to neutral, the AP's analysis shows that Democrats and Republicans each benefited from advantages in particular states.