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T-minus 16 days

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● House // Race file

[ House // IN-08 ]

Indiana's 8th District

Mary Allen (D)vsMark Messmer (R)

incumbent running · Lean: R+18 · Incumbent: Mark Messmer (R)

99 in 100

Mark Messmer favored>99%

All but certain for Mark Messmer: a 100 percent chance of winning. No public polls yet.

  • Seat:Incumbent running
  • Lean:R+18
  • Incumbent:Mark Messmer (R)
  • District:8 of 9 in Indiana
  • Odds:Messmer >99%
  • Margin:Messmer +26.2, give or take 6.2
  • Polls:none yet, running on the fundamentals
  • Generic ballot:D+8.2
  • T-minus:16 days

▸ Margin // Uncertainty

Messmer +26.2

The model's best guess at the final margin, give or take 6.2 points. Polls have missed by more than that before.

Projected margin
Messmer +26.2
Uncertainty
6.2 points, one standard deviation
Likely range
Messmer +34.1 to Messmer +18.3 (80 percent)
Poll average
No polls
Starting point
Messmer +26.2 before any polls

Margins read Democrat minus Republican: Allen ahead is positive, Messmer ahead is negative.

▸ Movement // 0 daily snapshots

Reading the history

▸ Polls // None yet

No public polls here. The number comes from the district lean (R+18, worth 31.3 points to the Republican), the incumbent (Mark Messmer, running again, worth 4.8 points), and the national environment (generic ballot D+8.2, which the model reads as a 9.9 point Democratic tilt after discounting it). Together they give a projected margin of Messmer +26.2 with an uncertainty of 6.2 points.

▸ Race file // The facts

The seat
Mark Messmer (R), running for another term.
On the ballot
Mary Allen (D) vs Mark Messmer (R, incumbent)
Last time
2024: Democrat 29.5, Republican 68.0. Messmer by 38.5.
President
2024, statewide: Trump 58.6, Harris 39.6. Trump by 19.0.
Lean
R+18 by the Cook partisan index

Facts from Ballotpedia and Wikipedia, in our words. The district on Ballotpedia ↗

▸ Candidates // Read more

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