The Hill reports today on attempts to take down libertarian-leaning Republican Rep. Justin Amash of Michigan on the part of big party donors:

In a letter obtained by The Hill, prominent Michigan donors request financial backing for Amash's primary challenger, Brian Ellis. Seven individuals, including prominent Michigan businessmen Mark Bissell, J.C. Huizenga and Mike Jandernoa, signed the fundraising plea.

They argue that Amash "and others have effectively nullified the Republican majority in the U.S. House."

"[Amash] and a small group of like-minded legislators rejected Speaker Boehner's plea to pass legislation requiring Congress and the president be subject to ObamaCare, and put on hold the special new tax on medical equipment. This irresponsible action hurt over 50 great West Michigan businesses and was part of the chaos that led the nation to the edge of default," the letter says.

The letter was printed on Ellis's campaign stationery.

"These are folks I've known for a long time, and they're excited about my candidacy," Ellis told The Hill.

Ellis said his supporters have expressed frustration with the conservative wing of the GOP and the shutdown strategy….