Months of campaigning, in-fighting, insults and confusion that have stemmed from the European Union (EU) referendum will come to their climax on Thursday (June 23) as polls open on what has been dubbed a 'once in a generation decision.'

Both the Remain and Leave camps have cross party support and have viciously been battling to take the lead in opinion polls, which had shown a fairly balanced picture with Leave holding a marginal lead.

The Labour MP for Hayes and Harlington , John McDonnell, took to the streets of his constituency on Tuesday (June 21) for one final campaign push with just two days left until decision day.

Decision day looms

Mr McDonnell , who is also the Shadow Chancellor of the Exchequer , told getwestlondon why he was campaigning to stay part of the 28-country union.

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He said: “[Leaving] will have consequences right across the country.

“The problems we face now are transnational: the refugee crisis, climate change, tax evasion all demand a transnational approach.

“A lot of companies are based here in Hayes because of the links with Europe.

“Our campaign has been remain and reform. We think the European Union needs to be more open, transparent and democratic.

“We support the free movement of people but we need greater rights to protect workers.

“There is a need for reform. It is a large bureaucracy.”

Mr McDonnell added that he had always viewed the EU from a eurosceptic position, and did not vote to originally enter the union.

Final push for Leave

Another high profile politician, Boris Johnson , also gave a final push for the Leave campaign on Tuesday when he took part in the BBC's Great Debate, when the MP for Uxbridge and South Ruislip clashed with Scottish Conservatives leader Ruth Davidson and with the new Labour Mayor of London Sadiq Khan .

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While addressing crowds of the TV debate held at Wembley Arena, Mr Johnson said: “At the end of this campaign, I think you'll agree, there is a very clear choice between those on their side who speak of nothing but fear of the consequences of leaving the EU and we on our side who offer hope.

“If we vote leave, we can take back control of our borders, of huge sums of money - £10 billion, of our tax raising powers, of our trade policy and of our whole law-making system.”

'It's been disgraceful'

Mr McDonnell said both sides had employed 'project fear' as a tactic, and that it may have turned voters off the debate.

He said: “It's been disgraceful. There has been exaggeration on both sides. From David Cameron going on about World War Three to Boris Johnson comparing the EU to the Third Reich, it's just turned people off.”

Mr McDonnell, who has represented Hayes and Harlington in Parliament since 1997, predicted a Remain win on election day, but added 'it will be closer than people think'.

Polls for the EU referendum open at 7am on Thursday (June 23) and close at 10pm.

To find your polling station click here and enter your postcode.