William M. Cowan (born April 4, 1969) is a former United States senator who represented the Commonwealth of Massachusetts in 2013. A member of the Democratic Party, he served a single term in the U.S. Senate from February 6, 2013, to July 16, 2013. During this period, he held the office of senator for Massachusetts and was officially recorded as Senator William M. Cowan.
Cowan’s tenure in the Senate was brief, encompassing one term in 2013, and he is classified as a historical member of Congress and a former officeholder. While in office, he served without a designated congressional district, as is standard for U.S. senators representing their entire state. Publicly available metadata does not list specific committee assignments, an official website, or additional roles beyond his service as a Democratic senator from Massachusetts during that five-month period.
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