In 1823 he won the seat in a highly contentious contest with arch-Federalist Harrison Gray Otis; the election (combined with a Republican sweep of the legislature the following year) marked the effective end of the Federalist Party in Massachusetts.
In 1823 he won the seat in a highly contentious contest with the unpopular arch-Federalist Harrison Gray Otis. Eustis' victory in the election (combined with a Republican sweep of the legislature the following year) marked the effective end of the Federalist Party in Massachusetts.