In the past five general elections, California has tabulated an average ... ballots arriving up to that point might still be valid and be added to the count. Florida’s election system is geared toward quick and efficient tabulation.

What to KnowCompetitive House races remain undecided in Los Angeles, Orange, Riverside and San Bernardino counties. Two of six key races in Southern California had been called as of early Tuesday. Other races remained too close to call.

Tom Wait takes a look at some of the still closely contested races for the U.S. House of Representatives who will represent Southern California nearly a week after Election Day.