John Wolfe, Jr., polled over 15% of the vote in the March 24, 2012 Louisiana Democratic presidential primary in three congressional districts. Under state law and under state party rules, that should entitle him to name 3 delegates to the Democratic national convention in September. However, so far, the state Democratic Party has not let him designate any delegates. According to this story, he will file a lawsuit in U.S. District Court on May 4, unless the state party changes it mind.
Wolfe is an attorney. The state party has never claimed that he isn’t a bona fide Democrat. Thanks to Randall Hayes for the link.