RaceScape · 2026 General · Maine Senate

Maine U.S. Senate · Susan Collins

Five-term incumbent down in the markets to populist outsider Graham Platner. Persuasion-led plan: the math requires reactivating the split-ticket Collins voter who has backed her before on seniority and delivery, not Republican-base mobilization alone.

ZIP5 resolution · Market underdog (~one-third to win) · crossover race

Snapshot

177

ZIPs

489K

Voters

35/65

GOTV / Persuade

Recommended spend split

GOTV 35% Persuade 65%

The play

GOTV Mobilize the base

99 ZIPs · 194,985 voters

Lead issue

Seniority and Delivering for Maine

Rural Penobscot, Aroostook, and the interior counties where Collins is modeled to win outright and her brand still holds.

Persuade Move the swing

78 ZIPs · 294,195 voters

Lead issue

Independent Results vs a Risky Alternative

Independents and ticket-splitting moderates in the competitive midcoast, Lewiston-Auburn, and Kennebec Valley towns near an even split. (Deep-blue Portland is out of reach.)

Lead with this

Seniority and Delivering for Maine. Collins's one irreplaceable asset is her seat near the top of the Appropriations Committee and what it means for Maine: the shipyard, federal projects, rural hospitals, heating assistance. No first-term senator can match it. That, not party, is the argument that has always moved Maine independents.

Don't take the bait

Don't nationalize the race or run on the Republican brand. In Maine that activates the two-thirds majority the market already shows against her. Don't relitigate the votes that energize the opposition. Don't let Platner define the contest as change versus the past. Make it a choice about his readiness and what Maine would lose.

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Top ZIPs · ranked by modeled support

Related Scape

Source: PharosGraph Audience Intelligence pipeline. Modeled two-way support against the actual nominee, refreshed weekly, projected onto every ZIP using census structure and demographics, scoped to voters likely to turn out in November 2026. Standings anchored to the betting markets and the district fundamentals. Audience rolls up to ZIP5 for digital, direct mail, connected TV, and digital-out-of-home buys.