York was hated and feared by Margaret because he was a potential rival to the throne she hoped to obtain for her son, then an infant.
The London mayor's decision to speak out against the way the cuts are being implemented puts him at odds with the chancellor, George Osborne, who is a potential rival for the Tory leadership once David Cameron steps down.
I'd work in voluntary or third sector organisations - they are very altruistic - but I would have real problems in private medicine because it's a potential rival to the health service.
He has received support from within the game, with his candidacy championed by the Wales manager, Chris Coleman, another former team-mate at Selhurst Park, and Pardew, who had appeared to be a potential rival for the position.
The governor invoked the Sept. 11 attacks to criticize those who, like Senator Rand Paul, the Kentucky Republican who is a potential rival for the 2016 presidential nomination, have questioned whether government surveillance efforts have trampled on civil liberties.
In an audio tape leaked in May, Mario Silva, a presenter on state television and (it now appears) a Cuban agent, enumerated to his handler the sources of illicit finance he said were available to Diosdado Cabello, speaker of parliament and leader of the ruling socialist party, who is a potential rival to Mr Maduro.
His statement seems both obvious and perilous: If there's "another pope," that means there is a potential rival to the throne.
O'Malley served as mayor from 1999 to 2007 before becoming Maryland's governor and is a potential rival to Hillary Clinton for the Democratic presidential nomination.
Knol has been called a potential rival to Wikipedia and other sites whose content spans a broad range of topics, including Mahalo and About.com, a property of The New York Times Company that uses experts it calls "guides" to write articles on a variety of topics.
By 1956, the Social Credit Party was becoming a potential rival to the Tories as Canada's main right-wing party.
