Obama has warned that several Republican states have redrawn their congressional maps to give themselves an "unfair advantage ...
The announcement Thursday comes a day after the state Supreme Court allowed the redistricting question to go to voters for an April 21 election. Early voting begins Friday.
Whether by law, referendum or special election, redistricting efforts are happening across the county. Utah, Florida, and New York, could be next.
Democrats have flipped several state Legislature seats in special elections since Trump took office again.