[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/05/06/clint.obama.jpg caption=" "] (CNN) - Much has been made about both Hillary Clinton and Barack Obama's entrenched demographics, with each claiming crucial Democratic voting blocs. In primary after primary, it seems like the same coalitions vote for each candidate.
But exit polls out of Kentucky and Oregon Tuesday night show demographics are not necessarily destiny - geography and culture play a large role.
Consider white blue-collar voters, a demographic that is often considered to be Clinton's strongest. In Kentucky, she won 75 percent of these voters, while only 18 percent went for Obama. But in Oregon, exit polls show Clinton and Obama are essentially tied among this demographic: 50 percent supported Clinton, and 47 percent voted for Obama.
And consider voters under 30 - a demographic that usually votes overwhelmingly for Obama. In Oregon he carried these voters by 40 points over Clinton. But in Kentucky, Clinton beat Obama in that demographic by 16 points.