With parties scrambling for every possible vote, younger voters may play a key role in the upcoming general election.
Over 80,000 18-34 year-olds registering to vote in the past 48 hours - making up nearly two-thirds of the total applications.
Some 46,100 voters aged 25 and under have registered to vote, while 42,600 people aged 25-34 want to make their voices heard, according to Government figures.
In total, more than 300,000 people have applied to register to vote in 48 hours - 139,162 applications on Tuesday, followed by 177,105 on Wednesday.
This is well above the typical number for weekday applications, which has been averaging around 37,000 for the past month.
They are also the highest and second highest number of applications submitted on a single day this year.
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Just 4% came from those aged 65 and over, but these figures may be put down to this age group already being registered.
The increase in the volume of applications should not be treated as direct evidence of an increase in the number of people able to vote.
At previous elections there have been applications from people below the legal age to vote or who are already on the electoral register.
The deadline for applying to register is Tuesday November 26.
Labour leader Jeremy Corbyn may be pleased to hear the figures for young people as he will be hoping thousands of students will back him.
However, recent polling showed that Boris Johnson as more popular in every age group than Mr Corbyn - including in the 18-24 category.