ZIP Code 50858

Madison County, Iowa

Your Representative

Photo of Zachary Nunn
Zachary Nunn
R Republican · IA-03

Your Senators

Photo of Chuck Grassley
Chuck Grassley
R Republican · Senior Senator
Photo of Joni Ernst
Joni Ernst
R Republican · Junior Senator

Lobbying Influence on Your Representatives

$2.0B
total lobbying on committees your representatives serve on
2023-Q1 – 2024-Q4

By Representative

Chuck Grassley $1.4B
Top committee: Senate Committee on the Judiciary
Zachary Nunn $353.8M
Top committee: House Committee on Financial Services
Joni Ernst $264.4M
Top committee: Senate Committee on Small Business and Entrepreneurship

Top Organizations Lobbying Your Reps’ Committees

CHAMBER OF COMMERCE OF THE U.S.A. $255.3M
GENERAL DYNAMICS CORP $46.1M
META PLATFORMS, INC. AND VARIOUS SUBSIDIARIES $43.7M
NATIONAL ASSOCIATION OF MANUFACTURERS $43.4M
AARP $39.5M
AMAZON.COM SERVICES LLC $35.8M
BIOTECHNOLOGY INNOVATION ORGANIZATION $33.9M
GOOGLE CLIENT SERVICES LLC $24.4M
NATIONAL MULTIFAMILY HOUSING COUNCIL INC $23.9M
AMERICAN BANKERS ASSOCIATION $23.8M

Issue Areas Affecting Your District

Immigration $318.2M
Retirement $178.0M
Law Enforcement/Crime/Criminal Justice $171.3M
Copyright/Patent/Trademark $167.9M
Banking $139.5M
Taxation/Internal Revenue Code $127.7M
Small Business $117.9M
Agriculture $116.2M
Homeland Security $94.8M
Tariff (Miscellaneous Tariff Bills) $69.2M

These figures represent total lobbying on issues within each committee’s jurisdiction, not direct contributions to these members.

Campaign Finance

2026 election cycle fundraising for your representatives (FEC data)

Zachary Nunn R Republican
$2.6M Total Raised
$638K Individuals
$1.0M PACs
$2.0M Cash on Hand
Chuck Grassley R Republican
$167K Total Raised
$132K Individuals
$32K PACs
$302K Cash on Hand
Joni Ernst R Republican
$2.0M Total Raised
$997K Individuals
$637K PACs
$2.1M Cash on Hand

Data from Federal Election Commission

ZIP Code 50858

Congressional representation for ZIP code 50858 in Madison County, Iowa.