The 45th United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1877, to March 4, 1879, during the first two years of Rutherford Hayes's presidency. The apportionment of seats in the House of Representatives was based on the 1870 United States census. The Senate had a Republican majority, and the House had a Democratic majority. The 45th Congress remained politically divided between a Democratic House and Republican Senate. President Hayes vetoed an Army appropriations bill from the House which would have ended Reconstruction and prohibited the use of federal troops to protect polling stations in the former Confederacy. Striking back, Congress overrode another of Hayes’s vetoes and enacted the Bland-Allison Act that required the purchase and coining of silver. Congress also approved a generous increase in pension eligibility for Northern Civil War veterans.

Major events

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Major legislation

Party summary

The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section. During this Congress, two Senate seats and one House seat were added for the new state, Colorado.

Senate

Republicans controlled the Senate through a VP-tie-breaking majority.

House of Representatives

Leadership

Senate

House of Representatives

Members

This list is arranged by chamber, then by state. Senators are listed in order of seniority, and representatives are listed by district.

Senate

Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in the last Congress, requiring reelection in 1880; Class 2 meant their term began in this Congress, requiring reelection in 1882; and Class 3 meant their term ended in this Congress, requiring reelection in 1878.

Alabama

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Nebraska

Nevada

New Hampshire

New Jersey

New York

North Carolina

Ohio

Oregon

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

West Virginia

Wisconsin

[Senators' party membership by state at the opening of the 45th Congress in March 1877. The green stripes in California represent Newton Booth of the Anti-Monopoly Party, while the gray stripes in Illinois represent independent David Davis.

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House of Representatives

The names of members of the House of Representatives are preceded by their district numbers.

Alabama

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Nebraska

Nevada

New Hampshire

New Jersey

New York

North Carolina

Ohio

Oregon

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

West Virginia

Wisconsin

Non-voting members

Changes in membership

The count below reflects changes from the beginning of the first session of this Congress.

Senate

House of Representatives

Committees

Senate

House of Representatives

Joint committees

Caucuses

Employees

Legislative branch agency directors

Senate

House of Representatives