Upset Brief · AZ-05 · Elizabeth Lee (D) vs. Mark Lamb (R)
A long shot on the math: it takes a 16.3-point national wave.
<1%
odds today
1%
odds with the plan
61,302
net votes to find
37
days left; voting starts October 7
Where
- 01+118Sagebrush (Maricopa County)Starting line Lamb +22. 4.6% split their ticket.
- 02+112Sunland Village (Maricopa County)Starting line Lamb +18. 4.9% split their ticket.
- 03+105Colonia (Maricopa County)Starting line Lee +1. 4.7% split their ticket.
- 04+95Oakwood Country Club (Maricopa County)Starting line Lamb +20. 4.2% split their ticket.
- 05+92Joshua Tree (Maricopa County)Starting line Lamb +16. 4.2% split their ticket.
- 06+92Fenimore (Maricopa County)Starting line Lamb +38. 4.0% split their ticket.
The top 12 precincts carry 15% of the plan.
How
- P+7,001Persuade7,001 voters who split their ticket in recent elections and lean Lamb today.
- M+23MobilizeAt least 603 people who voted in 2024 but not in 2022, in precincts where Lee's side wins at least 55 percent.
- C+791ConsolidateVoters who went third party in recent races, in the precincts that lean Lee's way.
Plus a national shift of 16.3 points of margin (53,486 votes) that no campaign controls.
What has to be true
- Lee wins 50 percent of the ticket splitters now leaning Lamb.
- The national environment moves about 16.3 points toward Lee's side between now and November 3.
- No 2026 public poll exists for this race, so the starting line is a weighted blend of official recent results; the first real poll will move it.
The numbers behind it
- 01Crossover regression150 precincts, R² 0.991, 20 crossover precincts identified
- 02Monte Carlo20,000 seeded simulated elections with a 7-point baseline error. 90% range of the final margin with the plan: -91,727 to -15,531 votes.
- 03Money, FEC candidate totals through July 1Lee $26,740 cash on hand; Lamb $243,426.
- 04Call program for this list11,637 households, 34,911 dials, about 1,829 live conversations: an estimated $5,192 at published rates.
Independent analysis by The Political Group from official Arizona Secretary of State precinct returns (2022 and 2024), FEC filings and published polls, as of September 26, 2026. Not affiliated with any candidate or party.