Ms Merkel's critics argue that she won't know what to do once in power.
But once in power, Republicans may well flinch at cutting such popular programmes without Democratic support.
Once in power, he preferred to focus on his quest for Africanness.
And, in the absence of gritty policy details from their prospective chancellor's lips, many voters are still unsure who would set his agenda once in power.
Critics charge that, once in power, Lula did little more than follow the centrist policies of his predecessors even as his own party became swamped in scandal.
The more we have these kinds of overblown debates, the less voters get a sense of what politicians are actually about and what they'll do once in power.
Perhaps Mr Luzhkov would become more diplomatic once in power.
And once in power, notes Peter Mair of the European University Institute in Florence, governments lose popularity more quickly, not least because they are constrained by decisions taken in Brussels.
The protection that the ANP once had in power was withdrawn by the interim government.
On the European side, it would be a mistake to sit back and wait for a sea-change in Tory attitudes once the party is in power.
Once a power in menswear, the YSL brand had languished for ten years because it was licensed to third parties.
Mubarak said he was looking forward to meeting with Barak in Cairo once the Israeli leader was firmly in power.
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Once he had been in power for a few years, Mr Blair came to regret the amount of time and energy New Labour had devoted to courting the media.
Once Hitler had gained power in Germany in 1933, Toscanini never conducted there again.
India's political families may come in all shapes and affiliations, but many have one thing in common: Once power brings them an official residence, they cling to it like a Ganges crocodile to a bather's leg - sometimes for decades after they cease to hold office.
It could also mean clearing of forest and blasting of mountainsides to rig high tension power lines in once-picturesque environments.
But how much did she use her power once she was in office to advance the cause of women?
This advance in computational power has enabled scientists and engineers to tackle problems once considered in the realm of science fiction.
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Now the rise in emerging economies is once again altering power relations among states and creating new geopolitical risks.
The amount of processing power, once the great hurdle in getting anything done, now matters less.
If its currency weakens for once, consumer spending power could shrink, in theory, and that could help inflation there, too.
It is in our power to do so once more.
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In the past decade, Wu had turned Hopewell, once just another local property company, into an infrastructure and power developer in China, the Philippines, Thailand and soon, says the magnate, in Pakistan and India.
The rise in digital content has shifted that power once again and this time Netflix is on top.
Once before, the left was excluded from power in Mexico by questionable means.
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Once the MOX fuel assemblies have been irradiated in commercial power reactors, the plutonium can no longer be readily used for nuclear weapons.
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Nuclear plants were expensive to build, but once in operation their electricity was cheap enough for baseline power, if never too cheap to meter.
Once you grasp the decisive influence of power concerns in political outcomes, it becomes much easier to understand the internal rhythms of the federal government.
Once we stop concentrating dirty, legacy power sources in poor communities, our public health costs will drop and the quality of life for millions will improve.
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