He was a member of the Wisconsin State Assembly, representing Fond du Lac County during the 1903 session.
He ultimately returned to his family's Friendship homestead in 1892, and cultivated that farm for the rest of his life.
The Democratic committee in Fond du Lac County selected Carberry as their candidate just a few days before the election.
[3] He narrowly prevailed in the general election and represented the district in the Wisconsin State Assembly for the 1903 session, but did not run for re-election in 1904.
Joseph Carberry married Martha Reilly, the daughter of another prominent Fond du Lac County farmer.