Sarah Palin and right-wing Republicans are calling "shenanigans" over the Mississippi U.S. Senate race this week. (Full disclosure: Whenever someone uses that hokey phrase, I chuckle and think of the "South Park" episode when third-graders denounced ripoffs at a local carnival). Anyway, here's what happened in the Magnolia State, which isn't quite as funny. Establishment GOP U.S. Sen. Thad Cochran bucked the odds and history after a narrow primary loss to Tea Party favorite Chris McDaniel. On Tuesday, the six-term incumbent edged McDaniel in a runoff, buoyed by heavy turnout from African-Americans. The Cochran campaign openly courted these traditionally Democratic...