The party has now more than doubled in size since the May 2015 general election.
Tim Farron commented:
This election is a chance to change the direction of our country and thousands are joining our fight.
If you want to avoid a disastrous Hard Brexit. If you want to keep Britain in the Single Market. If you want a Britain that is open, tolerant and united, this is your chance.
Thousands of people up and down the country are joining the Liberal Democrats so that we can send a message to Theresa May and the Conservative Brexit Government that we do not want a hard Brexit.
In this General Election it is clear that only the Liberal Democrats can prevent a Conservative majority.
* Paul Walter is a Liberal Democrat activist. He is a councillor and one of the Liberal Democrat Voice team. He blogs at Liberal Burblings.