His selection comes as Charles Tannock, who co-founded the Conservatives for a People’s Vote campaign, will be on the ballot paper in London for the EU elections.
By taking part in the elections, the UK has also forced the EU to postpone the redistribution of 27 of its 73 seats to other countries.
Nearly 50 million people will take part in the EU elections even though the UK was supposed to have left the EU in March.
Mr Tannock told Parliament Magazine: “I have signed this petition for the revocation of Article 50 as it sends a signal to the British government that not all Brits want to ‘just get on with it’ and leave the EU, even if this means without a deal which has been excluded by a resolution of the UK Parliament.
“My preferred choice is, of course, to have a long Article 50 extension now in order to allow a final say second Referendum with a Remain option.”
The polls have revealed that the Tories have been affected for failing to deliver on Brexit and are likely to lose votes in the local and EU elections.
The latest Comres poll has revealed that the Remain camp would win a second referendum.
Dr Karim, who has been an MEP since 2004, said last December: “The only way to stop this madness in its tracks is a Parliamentary process leading to a People’s Vote.
“We want to be leading in our continent ideally through the European Union and projecting ourselves to the globe and winning, not falling down with a whimper.”
He also has said: “The UK alone cannot resolve this. We need our family to stand with us and facilitate our way out of this Brexit cul-de-sac.”
Poll suggest that Nigel Farage’s Brexit party are set to win the EU elections.
The next elections to the European Parliament are expected to be held between May 23 and 26.