Democratic Missouri Sen. Claire McCaskill sparked a fierce backlash from a Democratic legislator in her home state after listing her as an example of a “crazy Democrat.” In a scathing series of tweets on Monday and Tuesday, Missouri Democratic state Sen. Maria Chappelle-Nadal referred to McCaskill as “Dixie Claire,” described her as a “piece of shit,” compared her to a slave owner and accused “McCaskill and her racist democratic friends” of alienating the party’s base voters. McCaskill raised eyebrows in the final weeks of the midterm campaign by running a radio ad that described McCaskill as “not one of those...