Hillary Clinton has failed that test. Back in 2006 all agreed that Michigan and Florida should hold their primaries after New Hampshire. Back in January, the Democratic power brokers all agreed that the votes in Florida and Michigan should not count. That is a very strong statement of principle.
Today, Hillary Clinton and campaign stalwart, Harold Ickes, are saying that those votes should count (Clinton is facing a narrower path to the nomination, New York Times, March 19, 2008: A1, A16). They should count despite the fact that Ms. Clinton's name was the only one on the Michigan ballot; they should count despite the fact that none of the candidates campaigned in Florida or Michigan. That is self-interest.
If she wins the nomination, I will support her, but with diminished respect.
Sent to New York Times