Mr Raab, who has been pitted to succeed Mrs May as Prime Minister, described her “desperate” negotiations with the Labour leader as a “major mistake – bad for Brexit, bad for the Tory Party and potentially disastrous for the nation”. He warned: “Mr Corbyn, remember, has no serious interest in securing an effective Brexit. Throughout the whole process, he has zig-zagged like a drunk stumbling home from a Communist Party knees-up. “If the PM bends to Mr Corbyn’s whims now, we can kiss goodbye to the opportunities Brexit offers us.” Mr Raab’s scathing intervention appeared in the Mail on Sunday amid growing tensions in the Tory party over the cross-party talks.
Tory MPs fear Mrs May has “legitimised” Mr Corbyn with the talks which could lead to him becoming Prime Minister.
They also fear the Labour leader will reduce the minimum voting age to 16, which could solidify the electoral system in his favour.
A recent poll has revealed how the Tories are now “out of touch” with younger people, with the party now struggling more than ever with their age demographic rather than class.
Mrs May’s former aide Will Tanner set up the Onward think tank which will publish a report tomorrow warning that the Tories are losing support among their younger voters.
The age in which people typically switch to voting Tory has risen to 51 from 47, due to a drop in home ownership and austerity.
Mr Raab, who resigned last year over Mrs May’s deal said: “Labour’s antics are designed not to deliver a Brexit faithful to the referendum but to create chaos – which Mr Corbyn wants to exploit to seize power.
“He has a history of sympathising with the IRA, Hamas and Hezbollah, so it is no surprise Mrs May’s overtures have gone down badly with Conservatives.
“Our supporters are frustrated or simply giving up, with many threatening to take their vote elsewhere, to Ukip or even Nigel Farage’s Brexit Party.
“There is now a danger that Brexit could be lost and that the Government could fall – handing the keys to Downing Street to the very man the PM is depending on.”
Mr Raab added: “As Brexit Secretary, I urged her to take a firmer line with Brussels.
“My efforts were undermined by others within Government.”