Democratic Rep. Sean Casten was elected to a second term after a spirited challenge from Republican Jeanne Ives in historically GOP territory outside Chicago. That’s according to the Associated Press, which declared Casten the winner early today. With nearly 100 of precincts reporting, Casten had 51% of the vote vs. Ives’ nearly 47%. Libertarian Bill Redpath had nearly 2%. The 6th District covers parts of Chicago’s northwest and western suburbs.