Article: Clinton camp to go for Obama's pledged delegates?

HILLARY Clinton's presidential campaign intends to go after delegates Barack Obama has won in the caucuses and primaries if she needs them to win the Democratic nomination. This strategy was confirmed to me by a high-ranking Clinton official Monday. I am not talking about superdelegates, those 795 party big shots who are not pledged to anybody. I am talking about getting pledged delegates to switch sides.

What? Isn't that impossible? A pledged delegate is pledged to a particular candidate and cannot switch, right?

Wrong.

Pledged delegates are not really pledged at all, not even on the first ballot. This has been an open secret in the party for years, but it has never really mattered because ...