Because as Barack said, the only guarantee this time around is this election will be closer than the last one.
But he sent a warning to those hoping for a guarantee of equal time spent discussing Republican campaign violations.
When an airline sells a seat it's only promising to take the passenger to a particular destination, there's no guarantee as to time of arrival.
In addition Virgin said it was looking to release an app for Windows Phone 8 and other devices, but could offer no guarantee at this time.
If the connecting flight is with the same airline then they are duty bound to get you to your final destination but with no guarantee as to time of arrival.
But even banks that claim to comply with it now, such as Britain's NatWest and Germany's Deutsche Bank, say they cannot guarantee a transfer time of less than six days for most payments by wire.
Liberal Democrat AM Peter Black also called on the government to introduce a mortgage guarantee scheme for first time buyers.
Lewis said they would take time to guarantee they make the correct appointment after conducting a full review of the Welsh rugby structure.
The Affordable Care Act (health reform) will guarantee for the first time that everyone can get affordable health insurance coverage through the new exchanges.
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And substitute Connell tapped home from close range on the stroke of full-time to guarantee the points Bournemouth needed to secure third place in League Two.
Early adopters of cloud technologies understand that a cloud vendor's very existence hinges on its ability to protect data and have as little server downtime as possible, and most guarantee an up-time percentage and reimburse customers if it isn't met.
Once the individual mandate comes into effect in 2014, health insurance will be an even worse deal for this group, since the ban on preexisting condition exclusions that comes into effect at the same time will guarantee that they can buy insurance at favorable prices in the future if their health status changes for the worse.
Yet there is no guarantee they would use that time wisely and reach a deal.
However Mr Black welcomed an announcement on a mortgage guarantee scheme for first-time buyers, agreed with the Lib Dems as part of budget negotiations.
STAF, Inc.has 10 private services given a unique lifetime result-guarantee with only a one-time fee.
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In health, we will set out tomorrow a new guarantee of treatment within a set time which starts from the moment a patient is referred by their GP - not the time that they get onto the queue for their operation.
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Even if officials had been told in time, there is no guarantee anything would have been done.
Participation is subject to the terms of the Groupon Payments Merchant User Agreement, which may modify or discontinue the guarantee and the underlying services at any time.
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"There is no way in this modern world that you can guarantee a job for any period of time in any part of the world, " he told me.
Even spending time in school does not guarantee good outcomes.
Values-based leadership is not a guarantee of having the right answers all the time.
This obviates the need to continue to try to win the issue state-by-state over time, and it creates a guarantee that cannot easily be undermined or withdrawn by state legislatures and the political process.
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Schools will have to shape up: even the priciest private ones offer part-time education with no guarantee that siblings get offered the same shift meaning that families often have to shell out for both school fees and a nanny who works full-time.
There were occasions when someone needed to get into a car with a package and drive all the way out to Palatine to the FedEx station that had the latest drop-off time in the state just to guarantee the arrival of an overnight delivery.
They are expensive and time consuming, and there is no guarantee that the investment will pay off.
Retirement can be awfully dull, and there is no guarantee that the grim reaper will make it on time.
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After slipping to 44 in the rankings, the Dubliner is determined to return to the world's top 16 and now has to overcome two-time world semi-finalist Swail to guarantee his spot in the televised stages.
The day after the reform package was announced, the head of Ofqual wrote to Mr Gove warning that introducing too much change at one time might mean the regulator could not guarantee the quality of the exams.
Workers pay high taxes, but trade job security for a guarantee, should they be laid off, of time-limited but generous unemployment pay that they can live on and a promise that they will get new jobs fast.
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