The two great America political dynasties of the last 30 years are the Bushes and the Clintons.

Together, these two families have created a national drama that is as intriguing to watch as the HBO series "Game of Thrones."

And in the last week, just as the noble families in the TV show doing battling for control of the kingdom, both have roared at challenges from young lions within their own party.

Jeb Bush asserted his family's dominance among Republicans in a speech critical of the hard right orthodoxy of the Tea Party. He said an inflexible GOP today fails to "allow for disagreement." The former Florida governor criticized today's Republican Party for its drift from moderate conservative policies of his father, President George H. W. Bush and President Reagan on issues ranging from immigration reform to taxes.

Among Democrats the roar from the Clintons dynasty came in the voice of former President Bill Clinton.