U.S. District Judge William Zloch must decide whether political donors have the right to take their disagreements with a party's decisions to court.

A Fort Lauderdale federal judge is set to decide a sticky legal question: Can donors to a political party sue when they believe one candidate has been favored over others?

The class action lawsuit against the Democratic National Committee arises from the 2016 presidential primaries, with more than 100 donors to the committee and to the Bernie Sanders campaign claiming the DNC defrauded them by allegedly favoring Hillary Clinton after promising an “evenhanded and impartial” process in the committee charter.