Born in
East Haven, Connecticut, Plumb immigrated to Canada in 1865 and settled near
Niagara Falls, Ontario. Soon thereafter he became active in the
Conservative Party of Canada. He was elected three times as a member of parliament for
Niagara in the
House of Commons of Canada. He was first elected in the
Canadian federal election of 1874, but this result was voided, although he successfully defended the seat in a by-election held on 22 December 1874. Although defeated in the
1878 election, he regained his seat in a contested election in 1879. Following a defeat in
1882 election, he was appointed to the
Senate of Canada on 8 February 1883 on the recommendation of Sir
John A. Macdonald. He served as
Speaker of the Senate from 4 April 1887 – 12 March 1888, upon his death. ==Electoral record==