Politics | South Dakota ... And in S. Dakota Last primary is a toss-up By Dustin Lushing Posted Jun 3, 2008 11:49 AM CDT Copied Sen. Barack Obama shakes hands as he enters a town hall meeting at Mississippi University for Women in Columbus, Miss. (AP Photo/Alex Brandon, File) Unlike most of this year's primaries, South Dakota is a genuine toss-up. Different polls have both Hillary Clinton and Barack Obama leading by double digits. Politico focuses on things to watch for: Split time zones: The western half of the state is an hour behind the eastern half; results won't be revealed until all polls close at 8pm CT. A late night: Ballots are transported to and counted at county auditor's offices, some more than 2 hours from polling places. The Native American vote: Native Americans are South Dakota's largest minority group, with 8.5% of the population. Sioux Falls and Minnehaha County: The state's biggest city and the surrounding county are vital to Democrats in the general election. Turnout: The secretary of state predicts 40% to 50% of the state's 195,000 registered Democrats; campaign aides expect even more. Read These Next White House rolls with Trump's 'daddy' nickname. New Fox star, 23, misses first day after car troubles. New York Times ranks the best movies of the 21st century. A man has been deported for kicking an airport customs beagle. Report an error