DES MOINES, Iowa — A wide-open race in both parties sparked a record turnout Thursday in Iowa's caucuses, far exceeding previous contests.

Projections showed a turnout of 220,588 for Democrats, compared to 124,000 who participated in 2004. Most projections had estimated turnout would be about 150,000.

Turnout was also up on the Republican side, where projections showed about 114,000 people taking part.

The last contested Republican caucuses in 2000 drew 87,666 in caucuses won by then-Gov. George W. Bush.