Explained: Trump-backed Republican redistricting sought a midterm edge. It didn't work

Republicans in eight states redrew congressional district boundaries over the past year at Trump's urging to try to hold their House majority

Redistricting

The process of redrawing the boundaries of congressional voting districts, typically done after a census

Gerrymander

Manipulating district boundaries to favor a particular political party

Voting Rights Act protections

Federal protections for majority Black voting districts that a Supreme Court ruling weakened

AP Voter Poll

A survey used to measure voter attitudes and approval ratings referenced in the article