Don't know about Republican 'dynasties', but it is interesting that since the 1952 Presidential Election, there has always been a "Nixon", "Bush" or "Dole" on the Republican ticket, with the exception of the 1964 'Goldwater/Miller' duo.
If either Jeb Bush or Elizabeth Dole would be on the Republican ticket in 2008, then the 'streak' would continue...
dvwjr
True, but it is highly doubtful that a Bush or a Dole will be on the '08 GOP presidential ticket.