Each of the candidates will first talk informally with undergrads -- as Kerry, North Carolina Sen.

CNN: Hobnobbing at Harvard

Two or three dozen have already met informally to talk about countering the party's move to the middle.

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About 14 years ago, when I was a parent of young children, as preparation for a talk at a doctors' meeting about vaccines, I surveyed (rather informally) parents - mostly mothers of course - waiting in the playground of our local primary school.

BBC: 'The natural benefits of vaccines'

And there's been some talk of not having a formal conference committee on Capitol Hill, to just sort of do this informally, probably behind closed doors.

WHITEHOUSE: Press Briefing