The down-to-the-wire campaign helped push turnout in Iowa's kickoff caucuses toward a record Monday night.

Attendance topped 110,000 with about 90 percent of the state's 1,993 precincts reporting.

Democratic party officials expected turnout to climb above 120,000 when some larger precincts reported.

Some officials thought Monday's turnout would match or exceed the 1988 record, though the comparison was difficult because official attendance numbers were not kept that year.

Estimates had as many as 125,000 participants in 1988, when Rep. Dick Gephardt (search) of Missouri won.

Iowa's population is 2.9 million.

Many caucuses started late because participants were still arriving or waiting to get inside. Caucus organizers ran out of voter registration forms at Horace Mann School in downtown Iowa City, and about 100 people still were standing in a line that encircled the school at 6:30 p.m.