This matchup isn't final yet — we haven't confirmed every candidate here against the state's official candidate list.
This candidate list comes from federal campaign filings. We haven't checked it against LA's certified ballot yet — someone on that ballot may be missing here, and someone here may not be on it.
An incumbent has a record; a challenger has statements. We show each for what it is.
HEAD-TO-HEAD · U.S. House · LA-4 · SAME SCALE, SAME METHOD, BOTH CANDIDATES
Two records. Your values.
Solid and hatched shapes are built from roll-call votes wherever a record exists — what each did, not what either says; a shape drawn from reviewed statements is marked on statements. Whose record sits closer to yours is your call to make.
Mike JohnsonConrad Roberts Cable
SOLID VS. HATCH ASSIGNED BY BALLOT ORDER — NEVER PARTY · SAME SCALE, SAME METHOD FOR BOTH · HOW WE SCORE ▸
Mike Johnson: Governance & oversight 46 of 100 toward DISCLOSURE & AUDIT; Rights & liberty 53 of 100 toward INDIVIDUAL LIBERTY; Economy & taxes 51 of 100 toward FISCAL RESTRAINT; Environment & energy 36 of 100 toward CONSERVE & PROTECT; Immigration 69 of 100 toward TIGHTER LIMITS; Safety & enforcement 60 of 100 toward STRICTER ENFORCEMENT. Conrad Roberts Cable has no scored cluster positions yet. Matthew Gromlich has no scored cluster positions yet. Michael Nichols has no scored cluster positions yet.
ALSO IN THIS RACE
Matthew Gromlich · Democrat — We haven't confirmed this candidate against the state's official candidate list yet.
Michael Nichols · Republican — We haven't confirmed this candidate against the state's official candidate list yet.
MONEY & TIES · U.S. House · LA-4 · SAME CATEGORIES, SAME SCALE, BOTH CANDIDATES
Mike Johnson · ▮
$21.0M
TOTAL RAISED
Corporate-PAC share
— Not yet derived
Registered-lobbyist donations
— Not yet derived
Small-dollar share
18.44%
Disclosed trades · 12 mo
0 Members must disclose trades within 45 days; this picture is always at least that far behind.
Conrad Roberts Cable · ▨
$238.9K
TOTAL RAISED
Corporate-PAC share
— Not yet derived
Registered-lobbyist donations
— Not yet derived
Small-dollar share
69.43%
Disclosed trades · 12 mo
0 (not in office) Not currently a member of Congress; no STOCK Act filing obligation applies.
Quarterly FEC filings; totals cover the period ending on the date shown.
Disclosed by the FEC; we have not built the honest derivation — same for every member.
Disclosed to the FEC in itemized contributions; we have not built the join to lobbyist registrations — same for every candidate.
Members must disclose trades within 45 days; this picture is always at least that far behind.
Not currently a member of Congress; no STOCK Act filing obligation applies.
Every number above is a count or a share — where they differ, the difference is shown at equal weight and you weigh it. Lobbying meetings are not federally disclosed for either candidate; donations from registered lobbyists are.
FEC FILINGS THROUGH Jul 18, 2026
Coverage differs, and we say so: for the incumbent we count 64 positions derived from their roll-call votes; for this challenger, 0 positions their campaign has stated. We show the gap rather than fill it.
refreshed about 2 months ago
Cite this page
Civic Herald. “Louisiana's 4th District U.S. House race 2026: candidates and records.” https://civicherald.app/races/LA/house-4. Roster as of Aug 30, 2026.