BLOMKEST, Minn. — Rep. Collin C. Peterson shed his sport coat to inspect some shrimp.

It was 86 degrees on a recent Thursday in the calf-barn-turned-tank room, where the son of two dairy farmers is raising saltwater shrimp in the middle of rural Minnesota.

A 14-term Democratic-Farmer-Labor congressman, Peterson represents a district President Donald Trump won by 30 points in 2016. At first glance, that’d make him about as out of place as these Pacific white shrimp.

But as one of the founders of the Blue Dog Coalition, Peterson isn’t your typical Democrat. He has opposed abortion and same-sex marriage. He was no fan of Hillary Clinton, but as the ranking Democrat on the Agriculture Committee, he has a strong relationship with House Minority Leader Nancy Pelosi.

Peterson’s one of the most conservative Democrats in the House. The moment he retires, Republicans will likely pick up his 7th District — a heavily agricultural seat that stretches from the southern part of the state all the way up to the Canadian border.