Question:

Poll Demographics

Among women – a key demographic for Clinton, who could be the first woman elected President – she expands her lead a bit, taking support from Edwards, while Obama remains static. She wins 35% support among females, while Obama wins 19% and Edwards collects backing from 17%.

However, Edwards still leads among Iowa men, winning 29% support to 24% for Clinton. Obama wins 19% support from men.

Among the very liberal, Edwards is the favorite, winning 29% to Obama's 25% and Clinton's 18%. But among mainstream Democrats, Clinton is the far and away leader with 39% support, compared to 22% for Edwards and 20% for Obama.

Richardson elevates to the top tier among moderate Democrats, where he wins 18% support. Edwards leads with 25% support among moderates, followed by Clinton with 23% and Obama at 19%.

About this poll

The Zogby telephone survey was conducted August. 17–19, 2007, and included 503 likely Democratic caucus–goers in Iowa. The margin of error is +/– 4.5 percentage points.