Romney needs to prove he's still viable, having placed second in Iowa and New Hampshire.
McCain needs to prove his campaign is bigger than the New Hampshire primary.
Merreikh have the former Enyimba star Stephen Worgu on their books but he still needs to prove himself in Sudan.
My colleague Jonathan Fahay raised some good questions with his piece What Bloom Energy Needs To Prove as well.
FORBES: Bloom Energy A Billion-Dollar Company, Says New Report
Arnold still needs to prove he can sustain a business beyond the initial flurry of excitement from investors and corporate partners.
The environmental group Greenpeace applauded Apple's decision but said the company still needs to prove to the public that its new laptops can be recycled.
For that to happen, a publication needs to prove, not just conjecture, who these premium readers are, and where and how they can be found online.
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However, she warned that Apple needs to prove the validity of those patents if it is to win an injunction preventing the sale of Samsung's Galaxy Tab.
Given the lack of conviction seen in individual stock breakouts and weak rally attempts lately, the next market rally needs to prove itself, in a big way.
FORBES: 6 Market Signals To Look For Before Investing In 2012
Mr Kiriyenko still needs to prove he has the political guts and skill to argue his fiscal changes past the Duma's recalcitrants before its session ends next week.
Superman truly has to save Warner Bros. this summer while Thor merely needs to prove that the Marvel brand is super-powered on its own no matter which hero is wearing the cape.
FORBES: Why 'Man Of Steel' And 'Thor: The Dark World' Are The Most Important Films Of 2013
Our leaders believe that the likes of Sarkozy, Cameron and Merkel are serious when they tell us that Israel needs to prove it is serious about peace in order to enable them to vote against a Palestinian statehood resolution at the UN.
The pair were meant to go alone, but, in a burst of misguided inspiration, Frank who is soon to have a child, with his girlfriend, Mia (Mia Lyhne), and needs to prove his worth takes along his nephew, a glum and chubby thirteen-year-old named Bo (Marcuz Jess Petersen).
Corey needs to be able to prove her case beyond a reasonable doubt.
In the end, Australians may still be swayed by Mr Howard's economy and security package, and conclude that his opponent needs more time to prove himself.
ECONOMIST: Labour's feisty leader takes the election down to the wire
Iraq needs to open its doors and let in inspectors "anywhere, anytime" to prove they don't have such weapons, he said.
Do the experiences of Milly Dowler's family and all those whose phones were hacked, the McCanns and all those who have been maligned and Max Mosley and all those whose privacy has been invaded prove that the press needs to be investigated by a powerful new body which can fine papers and force them to make front page corrections?
He said he will challenge them to prove they can meet students' needs after putting off their promises to increase funding.
Manufacturers prefer to use mature, proven systems for big projects, but a system needs to be used on big projects before it can mature and prove itself.
In fact, all Petrocelli needs is one juror to buy his argument that the government didn't prove its case.
He said Nintendo needs hit games to push console sales, and the company remains confident Wii U will prove more popular with time.
By splitting them up, a daughter has to prove herself viable before she gets the complete set of resources she needs to develop into an adult.
We are confident that the same will prove true of investment capital for those trying to meet the broader needs of the huge market at the base of the pyramid.
Simon Jones is desperate to prove that he can be effective in one day cricket - it seems that he needs to convince Glamorgan of that too.
BBC: SPORT | Cricket | England | Unwanted tour may help new talent
But he is yet to prove he has the ability to put together the kind of broad alliance that any Brazilian politician needs to win the presidency.
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