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I'm sure someone's already pointed this out, but to be fair it would be hard for a political campaign not to be "incestuous" in Delaware. It's a small state where 98% of the potential candidates (let's be serious - you have to be connected to be elected in the US, as elsewhere) went to high school with one another somewhere in New Castle county, or are related by virtue of birth, marriage or having dated someone's parent or sibling. You couldn't be nominated and anonymous the way you could if you were, say, a senatorial candidate from San Diego campaigning in Redding.