The New York Times Adam Nagourney provides a great example.
"For Obama, a Struggle to Win Over Key Blocs"
It is the question that has hung over Senator Barack Obama’s presidential campaign, and it loomed large on Tuesday night after his loss to Senator Hillary Rodham Clinton in Pennsylvania: Why has he been unable to win over enough working-class and white voters to wrap up the Democratic nomination?
Hey Adam, here's what's making Obama struggle with working class white voters: Hillary Clinton is still in the race. That's right Adam, if she had dropped out last week, he would have killed in PA.
Do you really think these voters will pick a Republican this year? And if they will does it matter who the Democrats nominate?
This has been my problem with Hillary all along. Her base is White Conservative /Independent voters. That makes her just like John McCain. She's been running to the right since she started. She failed to run for the support of her own party. Instead, she blew off partisan support and ran headlong into the minefield of no man's land.
So If she wins the Democratic nomination I have to decide whether to elect the woman who votes like John McCain, or the man who actually is John McCain.