What states have used mid cycle redistricting to gerrymander seats over the last 20 years?

1. Summary of the results

Based on the analyses provided, several states have engaged in or are actively considering mid-cycle redistricting for gerrymandering purposes over the last 20 years:

States with documented mid-cycle redistricting activity:

• Texas - Republicans have used mid-cycle redistricting to extend their dominance and are currently planning to redraw congressional maps ^{[1] [2]}
• Florida - Has engaged in gerrymandering practices and is among states considering mid-cycle redistricting ^{[3] [4] [2]}
• Illinois - Has used mid-cycle redistricting to gerrymander seats, representing Democratic gerrymandering efforts ^{[3] [2]}
• North Carolina - Republican gerrymanders have given the party significant advantages ^[3]
• New Mexico - Has engaged in Democratic gerrymandering, though less significantly than Republican efforts ^[3]

States currently considering or being pushed toward mid-cycle redistricting:

• Missouri - President Trump has pushed for redistricting to create more Republican-leaning districts ^{[4] [5]}
• Indiana - Is considering mid-decade redistricting following Supreme Court precedents ^{[4] [6]}
• California - Democrats are threatening countermeasures in response to Republican redistricting efforts ^{[7] [1]}
• Ohio - Republicans may attempt to redraw maps ^[8]

The analyses reveal that Republican gerrymanders provide approximately 16 seats of advantage in the House of Representatives, with Texas, Florida, and North Carolina being the most significant contributors ^[3].

2. Missing context/alternative viewpoints

The original question lacks several crucial contextual elements:

• Legal framework changes: The 2019 U.S. Supreme Court ruling limited voting rights groups' ability to challenge gerrymandered maps, effectively opening the door for more aggressive mid-decade redistricting ^[6]
• Partisan imbalance: Republicans have significantly more opportunities and easier paths to gerrymander than Democrats due to their control of state governments in key states and favorable state laws ^{[7] [8]}
• Current political dynamics: President Trump has actively pushed for redistricting in multiple states as part of a broader strategy to create more Republican-leaning districts ^[4]
• Defensive vs. offensive gerrymandering: Democratic efforts in states like California represent largely defensive countermeasures rather than proactive gerrymandering campaigns ^[1]
• Scale differences: While both parties engage in gerrymandering, the analyses suggest Republican efforts are more extensive and impactful than Democratic ones ^[3]

3. Potential misinformation/bias in the original statement

The original question appears neutral and factual in its framing, seeking specific information about which states have engaged in mid-cycle redistricting. However, there are some limitations:

• Timeframe ambiguity: The "last 20 years" timeframe may not capture the most significant recent developments, particularly the post-2019 Supreme Court ruling period that has dramatically changed the redistricting landscape ^[6]
• Missing current context: The question doesn't acknowledge that this is an ongoing, active political battle rather than just a historical inquiry, with multiple states currently considering redistricting as part of coordinated political strategies ^{[4] [5]}
• Scope limitation: By focusing only on "mid-cycle" redistricting, the question may miss the broader gerrymandering picture that includes regular decennial redistricting cycles that have been equally or more impactful ^[3]

The question itself doesn't contain obvious misinformation, but it may inadvertently minimize the current urgency and scale of redistricting battles happening across multiple states simultaneously.