U.S. House seat · lines in effect since 2022
Mississippi's 3rd District
A district of about 740,000 people, 33% Black, 29% of adults with a bachelor's degree. It votes R+28.2 relative to the nation for president.
Source: 2026 results: civicAPI; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET
Where it sits among all 435 seats
Every U.S. House seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Labels below the bar mark 3 other seats in Mississippi.
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2020 | 2022 | 2024 | 2026 | |
|---|---|---|---|---|
| U.S. Senate | R+22.8 | No race | R+32.3 | No race |
| U.S. House | No race | R+41.5 | No race | R+16.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 435 seats. Small marks are other seats in Mississippi. The black marker is MS-3.
Lower than 69% of seats.
Higher than 57% of seats.
Lower than 96% of seats.
Higher than 92% of seats.
Lower than 87% of seats.
Less dense than 85% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.
GA-830% Black · 23% college gradsR+30.0Held RTN-9
31% Black · 29% college gradsR+19.5Flipped RLA-4
31% Black · 22% college gradsR+32.9Held RTN-5
26% Black · 28% college gradsR+20.0Held R
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Michael Guest (R)
2023– · Won 2022 by 41.5, 2024 unopposed, 2026 by 16.3
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)