The Daily Politics presenter slammed Work and Pensions Secretary Damian Green claiming the snap election was called because it was in the “interests” of the Tory party.
But speaking on the BBC show, Mr Green said Mrs May had “reluctantly changed her mind” because of “hugely important Brexit negotiations”.
He said: “I think she’s been completely upfront. She has said that she’s changed her mind, she reluctantly changed her mind because it became clear that with these hugely important Brexit negotiations coming up.
“Tim Farron was saying he was going to grind Parliament to a halt, there were more than 100 Lib Dem peers, the House of Lords was going to try and make it difficult.”
Andrew Neil suggested Theresa May called the General Election 2017 due to opinion polls
It’s in the interests of your party, let’s be honest Mr Green, that’s why you’ve called it
But Neil interjected suggesting recent polls had influenced the decision.
Discussing Brexit, he said: “You’ve got everything you wanted through. And 21 per cent ahead in the polls has nothing to do with it? It’s in the interests of your party, let’s be honest Mr Green, that’s why you’ve called it.”
But the MP for Ashford said an election win would strengthen the Tory Government’s hand in future Brexit talks.
He said: “Well, we have so far. But you’ve got the Brexit negotiations coming up.
PMQs live images Wed, April 19, 2017
Theresa May arrived in the Commons for PMQs to a roar of applause from her Conservative colleagues
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'Labour party will be going into the election pledging to spend £5billion extra’
“It’s clearly in the interests of the British people that we get the best Brexit deal we can and therefore having the strongest government we have, a Prime Minister with a new mandate will be able to negotiate better Britain’s relations with the rest of the EU.”
She said if Labour win the General Election 2017 they would be propped up by the Lib Dems and the SNP, who would be "pulling the strings".
Mrs May urged voters to vote Tory in the June general election, in order to deliver a "stronger Britain".