https://us.cnn.com/2019/04/23/politics/andy-mckean-iowa-gop-lawmaker-change-party/index.html

State Rep. Andy McKean, who has served in both Iowa's Senate and House chambers, identified with the Republican Party for 35 years before Tuesday's announcement and is the longest-serving Republican in the state's Legislature today, according to the Democratic Legislative Campaign Committee.

"With the 2020 president election looming on the horizon, I feel as a Republican that I need to be able to support the standard bearer of our party. Unfortunately, that is not something I am able to do," McKean said at a news conference.

McKean's district sits in two rural, blue-collar counties in Iowa – Jones and Jackson. And here we find the real reason lifetime politician chooses self serving interest