The Democratic caucus crowd doubled from 2000 to 2004, and party officials said leading up to tonight they expect a larger turnout than the more than 120,000 that attended four years ago.

"We were prepared for record turnout," Iowa Democratic Party Communications Director Carrie Giddins said. "We are hearing about lines getting into precincts, which is good that Democrats are excited to caucus."

KCCI-TV is airing video from Democratic site at Merrill Middle School where the event is standing room only. Barack Obama's crowd was so large it had to be moved from the commons area to the hallway.

Labels: Democrats