Boris Johnson’s allies today dismissed talk of a Brexit general election pact with Nigel Farage to ward off the threat from Labour – as he won the backing of former rival Matt Hancock. Supporters of the Tory front runner insisted he did not ‘need’ to do a deal with Mr Farage, despite the rising threat from his new party. The rebuke came amid claims Conservative donors are plotting a tie-up with Mr Farage that could prevent the Eurosceptic vote from splitting at a general election – which many fear will come sooner rather than later with Labour threatening an early no-confidence motion against a new PM. The arrangement could mean the Brexit Party does not field candidates against Tories they see as committed to making a clean break from the EU. Any deal could cover dozens of seats, helping to protect Brexiteers who might be vulnerable to Labour opponents if Mr Farage’s team took a chunk of their vote. In return the Tories could step aside in northern metropolitan constituencies where the Brexit Party is best placed to win. Underlining the strength of the challenge from the Brexit Party, a poll yesterday put its support on 24 per cent, three…