Eight years ago, the winner of the Indiana Democratic presidential primary remained undecided for hours as election returns from one Northwest Indiana county were conspicuously absent until late in the evening.But an elections official in Lake County — home to the cities of Gary and Hammond — says that won’t happen again this year.“I would think that we would have some really solid numbers, if not all of them, by 8:30 or 9 o’clock [Central Time],” said Jim Wieser, a Democratic attorney who is acting counsel for the Lake County Board of Elections.Lake County, which accounts for about 10 percent of the voters in a statewide Democratic primary, begins at a disadvantage in the count: It’s one of a dozen Indiana counties in the Central Time Zone, so polls are open there until 7 p.m.