BadgerBrief

Federal · Primary August 11, 2026

Who is running for U.S. House of Representatives — Wisconsin District 4 in 2026?

4 candidates are running.

Why this race matters

Milwaukee and surrounding urban areas

Democratic primary

Republican primary

Who has raised the most money?

CandidateRaisedSpentCash on handThrough
Gwen Moore$1,029,973$1,006,730$45,4912026-06-30
Amy Donahue$15,649$12,850$2,7992026-06-30

Federal data: FEC. State data: WI Ethics Commission Sunshine (non-commercial voter education use).

Ad money in this race

Who is paying to influence this race — supporting or attacking each candidate, and how much is a candidate's own committee vs. outside groups. Spend and reach are platform-disclosed ranges; figures are estimated midpoints. This shows pressure, not who wins.

Purnima Nath

$2k

Supporting

$0

Attacking

158k

Reach

$1k own committee · $949 outside (estimated)

Gwen Moore

$250

Supporting

$0

Attacking

27k

Reach

$0 own committee · $250 outside (estimated)

Amy Donahue

$99

Supporting

$0

Attacking

2k

Reach

$99 own committee · $0 outside (estimated)

Tim Rogers

$0

Supporting

$50

Attacking

2k

Reach

$0 own committee · $50 outside (estimated)

Who's paying. $2k in tracked ads — an estimated 52% from outside groups. Tim Rogers is the most-attacked candidate here.

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