Tom Price and John J. Duncan Jr. are from the same party
but disagreed on 100
percent of votes in the 115th Congress (2017-18).
It is unusual for two members of the same party to disagree on so many votes.
Out of 1 vote in the 115th Congress, they disagreed on 1 vote.
Here is the vote they disagreed on
Correction (Nov. 15, 2019): This page originally included all votes on passage of a bill under the "Major Votes" category. It now only includes votes designated as major by ProPublica.