Because it’s harder to get farther outside the mainstream than Murphy. As a June profile of Murphy noted: Murphy… has called secession “as American as apple pie” and spoke at a pro-nullification conference in Waukesha earlier this year. Also, he has suggested that someone send U.S. Sen. John McCain, a former POW, “back to Vietnam.” As for prominent state Republicans, he has referred to Gov. Scott Walker as “Pontius Walker” on a job-creation effort, called on U.S. Sen. Ron Johnson to resign, and described U.S. Rep. Paul Ryan as “lying Ryan,” a “progressive” and a “RINO,” or Republican In Name Only.