Whether incumbent Vincent Gray or one of his challengers wins the District of Columbia's Democratic mayoral primary, the winner appears likely not to receive much support from voters.
Gray is weakened by scandal and faces seven challengers.
Many observers believe the primary winner could get around 40,000 votes, or less than 40 percent of the total. Gray got more than 72,000 votes in 2010 when he defeated Adrian Fenty.
Washington is one of a dwindling number of big cities that require voters to register with a party to vote in its winner-take-all primary. Combine that with an unusually early April 1 primary, and turnout is expected to be low. That's led some reformers to say the nation's capital should change the way it elects its local leaders.