The Vote Ledger
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Data through Sep 17, 2026Compare members
The Vote Ledger
BM

Barbara Ann Mikulski

Senator from Maryland
SENATEDEMOCRAT1977–2017ID M000702
Compare
LegislationHEADLINE
94%with Dems
of 7,418 votes
Nominations
100%with Dems
of 394 · confirmations only
All contested
94%with Dems
of 7,812 · both combined
Steepest move
+7 pts
2007 → 2009
still a Democrat

Career arc

Legislation leads. Each point is one Congress: how often they sided with the Democratic majority on contested bills, resolutions and amendments.

100%75%50%25%0%sides with Democrats ↑sides with Republicans ↓1977198319891995200120072013
2015–16114th Congress
Sat as a Democrat
97.2%with Democrats
legislation only
Votes for this Congress are open below
Steepest move: 2007 → 2009, +7 pts — while still a Democrat.
Sat as a DemocratSat as a RepublicanVotes available below

Votes

DateBillVoteTypeCastSided with
Dec 10, 2016S. 612A bill to designate the Federal building and United States courthouse located at 1300 Victoria Street in Laredo, Texas, as the "George P. Kazen Federal Building and United States Courthouse".LEGISLATIONYEABOTH · NOT SCORED
Dec 10, 2016S. 612A bill to designate the Federal building and United States courthouse located at 1300 Victoria Street in Laredo, Texas, as the "George P. Kazen Federal Building and United States Courthouse".LEGISLATIONYEABOTH · NOT SCORED
Dec 9, 2016H.R. 2028A bill making appropriations for energy and water development and related agencies for the fiscal year ending September 30, 2016, and for other purposes.LEGISLATIONYEAREP MAJORITY
Full textA bill making appropriations for energy and water development and related agencies for the fiscal year ending September 30, 2016, and for other purposes.Party majoritiesDemocrats Nay · Republicans YeaCounts toward scoreYes — the parties split.
Where this lands
YEASided with the Republican majority
Dec 9, 2016H.R. 2028A bill making appropriations for energy and water development and related agencies for the fiscal year ending September 30, 2016, and for other purposes.LEGISLATIONYEAREP MAJORITY
Dec 8, 2016S. 2943An original bill to authorize appropriations for fiscal year 2017 for military activities of the Department of Defense, for military construction, and for defense activities of the Department of Energy, to prescribe military personnel strengths for such fiscal year, and for other purposes.LEGISLATIONYEABOTH · NOT SCORED
Dec 7, 2016S. 2943An original bill to authorize appropriations for fiscal year 2017 for military activities of the Department of Defense, for military construction, and for defense activities of the Department of Energy, to prescribe military personnel strengths for such fiscal year, and for other purposes.LEGISLATIONYEABOTH · NOT SCORED
Dec 7, 2016H.R. 34A bill to authorize and strengthen the tsunami detection, forecast, warning, research, and mitigation program of the National Oceanic and Atmospheric Administration, and for other purposes.LEGISLATIONYEABOTH · NOT SCORED
Dec 5, 2016H.R. 34A bill to authorize and strengthen the tsunami detection, forecast, warning, research, and mitigation program of the National Oceanic and Atmospheric Administration, and for other purposes.LEGISLATIONYEABOTH · NOT SCORED
Dec 1, 2016H.R. 6297A bill to reauthorize the Iran Sanctions Act of 1996.LEGISLATIONYEABOTH · NOT SCORED
9 most recent roll calls shown · 292 contested votes scored in the 114th CongressAll votes this Congress →

By policy area

career · legislation
Economics and Public Finance95.1% · 2,330 votes
Armed Forces and National Security90% · 601 votes
Government Operations and Politics92.8% · 502 votes
Taxation95% · 416 votes
International Affairs92% · 351 votes
Congress94.6% · 335 votes
Health97% · 300 votes
Labor and Employment99.1% · 216 votes
Foreign Trade and International Finance94.1% · 204 votes
Energy91.1% · 203 votes
Education97% · 197 votes
Transportation and Public Works97% · 197 votes
Finance and Financial Sector90% · 190 votes
Crime and Law Enforcement94.4% · 180 votes
Agriculture and Food94.4% · 179 votes
Immigration94.6% · 130 votes
Science, Technology, Communications89.7% · 97 votes
Environmental Protection93.6% · 94 votes
Social Welfare91.9% · 86 votes
Public Lands and Natural Resources96.4% · 83 votes
Commerce85.9% · 71 votes
Housing and Community Development98.4% · 64 votes
Law95.2% · 62 votes
Civil Rights and Liberties, Minority Issues93.9% · 49 votes
Emergency Management97.6% · 42 votes
Water Resources Development78% · 41 votes
Families100% · 14 votes
Native Americans100% · 14 votes
Industrial relations100% · 13 votes
Commemorations90% · 10 votes
Too few contested votes to score
Electronic surveillance— · 7 votes
Black lung— · 6 votes
Arts, Culture, Religion— · 5 votes
Home repair and improvement— · 5 votes
Government securities— · 4 votes
Income tax— · 4 votes
Municipal finance— · 4 votes
Social Sciences and History— · 4 votes
Embargo— · 3 votes
Financial disclosure— · 3 votes
Independent regulatory commissions— · 3 votes
Constitutional amendments— · 2 votes
Contested elections— · 2 votes
Cultural centers— · 2 votes
Indian claims— · 2 votes
Museums— · 2 votes
Private Legislation— · 2 votes
Public works— · 2 votes
Sports and Recreation— · 2 votes
Animals— · 1 vote
Aquaculture— · 1 vote
Barber and beauty shops— · 1 vote
Domestic relations— · 1 vote
Droughts— · 1 vote
Impeachments— · 1 vote
Import restrictions— · 1 vote
Political representation— · 1 vote
Rehabilitation— · 1 vote
Territories (U.S.)— · 1 vote

They also voted in 44 areas where the parties never split, so there is nothing to score — never on a contested question: Age and employment, Agriculture in foreign trade, Auditing, Aviation insurance, Awards, medals, prizes, Broadcasting, Cemeteries and funerals, Checks, Child abuse, Climate, Clothing industry, Commodity control, Conservation of natural resources, Contempt of legislative bodies, Customs administration, Disabled, Earthquakes, Emigration, Federal advisory bodies, Government publications, Human rights, Insect control, International agencies, Lakes, Libraries, Marine mammal protection, Marine resources conservation, Monuments and memorials, Municipal budgets, Municipal home rule, Narcotics, Nuclear facilities, Nuclear weapons, Photovoltaic power systems, Political prisoners, Real property, Recall of officials, Referendum, Refugees, Rural conditions, Salaries, Solar energy, Terrorism, Tobacco.

Blue is the share of votes siding with the Democratic majority; the tick marks 50%.

Service record

20 Congresses
95th · 1977100th · 1987114th · 2015
Democrat · House · MD95th–99th
Democrat · Senate · MD100th–114th
Term datesexact
Members · Maryland
BM

Barbara Ann Mikulski

Senator from Maryland
SENATED1977–201720 CONGRESSES
Compare
LegislationHEADLINE
94.1%with Democrats
of 7,418 votes · 5.9% with Republicans
Nominations100%of 394 votes
All contested94%of 7,812 · combined
Steepest move+7 pts2007→09, as a Democrat

Career arc

10050019772015
2015–16 · 114th · Democrat97.2%

Legislation leads. Tap a point to read that Congress.

Votes

Democratic majorityNay
Republican majorityYea
Counts toward scoreYes
Open roll call
Latest 6 shown · 292 contested votes scored in the 114th

By policy area

career
Economics and Public Finance95.1% · 2,330
Armed Forces and National Security90% · 601
Government Operations and Politics92.8% · 502
Taxation95% · 416
International Affairs92% · 351
Congress94.6% · 335
Health97% · 300
Labor and Employment99.1% · 216
Foreign Trade and International Finance94.1% · 204
Energy91.1% · 203
Education97% · 197
Transportation and Public Works97% · 197
Finance and Financial Sector90% · 190
Crime and Law Enforcement94.4% · 180
Agriculture and Food94.4% · 179
Immigration94.6% · 130
Science, Technology, Communications89.7% · 97
Environmental Protection93.6% · 94
Social Welfare91.9% · 86
Public Lands and Natural Resources96.4% · 83
Commerce85.9% · 71
Housing and Community Development98.4% · 64
Law95.2% · 62
Civil Rights and Liberties, Minority Issues93.9% · 49
Emergency Management97.6% · 42
Water Resources Development78% · 41
Families100% · 14
Native Americans100% · 14
Industrial relations100% · 13
Commemorations90% · 10
Electronic surveillance— · 7
Black lung— · 6
Arts, Culture, Religion— · 5
Home repair and improvement— · 5
Government securities— · 4
Income tax— · 4
Municipal finance— · 4
Social Sciences and History— · 4
Embargo— · 3
Financial disclosure— · 3
Independent regulatory commissions— · 3
Constitutional amendments— · 2
Contested elections— · 2
Cultural centers— · 2
Indian claims— · 2
Museums— · 2
Private Legislation— · 2
Public works— · 2
Sports and Recreation— · 2
Animals— · 1
Aquaculture— · 1
Barber and beauty shops— · 1
Domestic relations— · 1
Droughts— · 1
Impeachments— · 1
Import restrictions— · 1
Political representation— · 1
Rehabilitation— · 1
Territories (U.S.)— · 1

Also voted in 44 areas where the parties never split — never on a contested question: Age and employment, Agriculture in foreign trade, Auditing, Aviation insurance, Awards, medals, prizes, Broadcasting, Cemeteries and funerals, Checks, Child abuse, Climate, Clothing industry, Commodity control, Conservation of natural resources, Contempt of legislative bodies, Customs administration, Disabled, Earthquakes, Emigration, Federal advisory bodies, Government publications, Human rights, Insect control, International agencies, Lakes, Libraries, Marine mammal protection, Marine resources conservation, Monuments and memorials, Municipal budgets, Municipal home rule, Narcotics, Nuclear facilities, Nuclear weapons, Photovoltaic power systems, Political prisoners, Real property, Recall of officials, Referendum, Refugees, Rural conditions, Salaries, Solar energy, Terrorism, Tobacco.

Service record

95th · 1977114th · 2015
Democrat95th–99th
Democrat100th–114th

Party switchers

John Alexander LoganD→R · IL · 40thWesley Wade WatkinsD→R · OK · 105thBen Nighthorse CampbellD→R · CO · 104th
AD320 × 50 · Anchor