Sen. Jeff Flake, an Arizona Republican, has seen a 14-point drop in popularity since President Trump took office. Ralph Freso/Getty Images The majority of US senators have seen a drop in their net approval ratings since President Donald Trump took office in January, according to a new Morning Consult poll of the senators' constituents.

Notably, both Republicans in consistently red states and Democrats in deeply blue states have taken a hit.

Arizona Republicans Jeff Flake and John McCain saw 14-point and 12-point drops, respectively, while Rhode Island's Democratic senators Jack Reed and Sheldon Whitehouse both took 20-point hits.

Three Republicans — Senate Majority Leader Mitch McConnell, Flake, and McCain — are viewed negatively by a plurality of their constituents.

McConnell maintained his long-held position as the least popular senator in America, with a 48% disapproval rating, while former Democratic presidential candidate Bernie Sanders held steady as the most popular.

The poll surveyed 140,000 registered voters across the country between April 1 and June 18, 2017.

The 5 least and most popular senators are: