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Former member of Congress · last served 113th Congress

Official portrait of Sen. William M. Cowan

William M. Cowan

DEMOCRAT U.S. Senator · MassachusettsSenate 2013–2013

William "Mo" Cowan was a Democratic U.S. senator from Massachusetts, first elected to Congress in 2013.

2Bills & resolutions sponsored113th–113th Congress (excludes amendments)
0Passed a chamberof 1 substantive bills (excludes resolutions and ceremonial bills)
0Became law113th–113th Congress
—Broke with partyNo roll calls in PORKER’s records (they start in 2011)
—Missed votesNo roll calls in PORKER’s records (they start in 2011)
—Pork: own shareFY2024 earmarks: not in office

How we count: “Broke with party” is a yes/no roll call where the member voted against most of their own party on that vote (party as recorded; even splits not counted). “Pork: own share” splits each earmark shared by several members evenly among them.

Recent votes

No recorded roll-call votes in PORKER’s records. Roll-call records start in 2011.

5 most recent bills

Official records on bills this member sponsored

113th Congress. What Congress.gov lists for the 2 bills sponsored.

RecordBillsSource
Bills sponsored2Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them →
With a CBO cost estimate listed0None listed
With a committee report listed0None listed
Evidence
How counted
Bills where this member is the lead (first-listed) sponsor in the 113th Congress, read from the stored Congress.gov bill records
Fields
cboCostEstimates, committeeReports, constitutionalAuthorityStatementText, notes
PORKER copy refreshed
October 26, 2026 (nightly)

Read this first. These are counts of records Congress.gov lists. Many bills never get a CBO estimate or a report, so a zero is not a mark against a member. We never show this as a score.

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Data as of Oct 26, 2026 · Sources: Congress.gov, Senate.gov, House Clerk, Appropriations Committee earmark tables. PORKER is non-partisan.