What's in Minnesota's water?

For the second time in the modern age, two hopefuls from "Minnesota Nice" are eyeing a presidential bid, and it could come as soon as 2020 in the Democratic primary.

Left-leaning Sens. Amy Klobuchar and Al Franken, the former writer and actor for "Saturday Night Live," are getting lots of buzz about a potential run. The Klobuchar chatter is based on her recent visit to Iowa, the first caucus state, and Franken's generating talk because of his "high-profile grillings" of top Trump Cabinet officials.

The University of Minnesota's Eric J. Ostermeier, author of the Smart Politics blog, drew a parallel to 1968, when Hubert Humphrey ran against Eugene McCarthy. At the time, Humphrey was vice president and McCarthy a senator.

Never have two sitting senators from one state run at the same time, according to his research. A Klobuchar-Franken clash, he said, "would mark the first time a pair of sitting U.S. senators from the same state simultaneously ran for the White House in U.S. history."

Ostermeier said a Klobuchar-Franken challenge is unlikely, but it's a better shot than other pairings in the Senate rumor mill such as Virginia Democrats Tim Kaine and Mark Warner, New York's Chuck Schumer and Kirsten Gillibrand, Ohio Democrat Sherrod Brown and Republican Rob Portman, and Colorado Democrat Michael Bennet and Republican Cory Gardner.

Paul Bedard, the Washington Examiner's "Washington Secrets" columnist, can be contacted at pbedard@washingtonexaminer.com