How primaries work: Democratic Party's process makes for longer campaign

With campaigns starting sooner and primaries moving up earlier on the calendar, the length of the nominating process has become extended.
Wednesday, June 4, 2008 | 10:01 a.m. CDT; updated 4:06 p.m. CDT, Tuesday, July 22, 2008

COLUMBIA — Primary season came to a close Tuesday night after one of the longest campaigns to date.