Since the general election was called in October more than three million people have registered to cast a vote on December 12.

With polling day just over two weeks away the campaign is entering its final stages and the various political parties wait to see what situation they'll be in on the ominous date of Friday 13th.

More people registering to vote grows the size of the electorate and helps throw off polling predictions. The deadline to register has now passed and the time to work out what it means for the future of the UK is here.

Will the number of people signing up to vote make a serious impact on the result of the general election?

The Claim

Jeremy Corbyn and his Labour party will certainly be hoping so. Those who sign up are generally younger and younger voters tend towards voting Labour. The more people who register to vote the better Corbyn's prospects look.

In the 2017 general election Corbyn was buoyed by a supposed "youthquake" as younger people registered to vote and supported Labour in droves, turning a vote the Conservatives thought would be a victory lap into one where they lost their majority.

Two thirds of the voters who registered for the general election were under 35, while only four per cent of registrations came from over 65s. This can be explained in part by older voters usually already being registered.

Having more people in the electorate will change the result of the election, if a majority of new sign ups are likely to vote for one particular party then that party is going to be hugely boosted. No party is going to turn their nose up at a couple of million new voters.

As far as the surge in voter registration goes it will likely boost Labour to the detriment of the Conservatives. It looks like good news for Corbyn and bad news for Boris Johnson.

The Counter Claim

However, not every application to vote means a new person is joining the electorate. Some are duplicates, where someone who is already registered to vote ends up registering again, while others are people who have changed address and need to re-apply. 

There's also a big difference between someone registering to vote and actually turning up at their local polling station on December 12. Not everyone will go and vote and the timing of the election will also have an impact too.

Winter weather might affect turnout and polling day being near the end of the academic term means university students could already have gone home. If lots of younger voters end up casting their ballot in a different constituency that could have a big impact.

The supposed "youthquake" of the last general election also turned out to be more of a small tremor. After the surprising result in 2017 the idea that a surge of young voters backing Labour tipped the scales sounded plausible but the actual turnout for younger voters wasn't much increased.

Even if the large amount of new voters registering is good news for Labour it's likely the eventual impact will be less than they were hoping for. 

The Facts

Around 45.8 million people were already registered to vote in the UK and there have been over 3.1 million new registrations, though around a third of those come from people who were already registered.

The Electoral Reform Society reported there have been 875,300 more applications than there were over a similar period in the run up to the 2017 general election. They said they had "never seen a surge like it".

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There were big spikes in registration on October 30, on November 12 after a big Facebook campaign by Labour and just after the Question Time special on November 22.

The largest jump in registrations came on Monday, November 22, the day before the registration deadline. Over 366,000 people registered to vote on that day, proving that if nothing else Brits like leaving things until the last minute.