You can't compare the Bush family name to a Barack Obama.
Bush's run in 2000 was the exception to the rule.
Any other candidate, Dem or Rep with the Thin Resume, short public experience, & reputation for grammatically ineptness would have never made it past the primary.
Bush's family name carried him all the way. You & I, and millions of Democrats may not have found anything positive about the Bush family name- but we do not get to decide general elections.
Its the millions of non-partisan moderate Independent voters who always make the difference in a general election.
For many of these people, the Bush name was still an honorable political family. ( Until Dubya really damaged it in the last 6 years ) Of course rank & file repubs respect & admire the Bush legacy ( back then)
Watch in 2012 or 2016, if indeed Jeb Bush runs- he will still be a favored candidate due in part to being a Bush.
Just like Hillary is getting lots of mileage for being a Mrs. Clinton.
Barack Obama cannot be compared to the Bush run.