Bill Clinton's DNC speech tried to cast a big tent of potential Kamala Harris voters.
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- The DNC has shown Democrats really want to win over Republican and independent voters.
- Several Republicans have spoken at the convention, including former Trump White House officials.
- Speeches from Bill Clinton and Oprah on night three also seemed aimed at making a broad appeal.
Here's something you don't usually expect: partisans speaking at the convention of the opposing political party.