The Health Select Committee chair says the campaign's £350m a week figure is inaccurate.
Former defence secretary Liam Fox warned it would be a 'democratic outrage' if MPs ignored outcome.
An average of four million viewers tuned into the 9pm show on 7 June says ITV.
More than 500,000 registered to vote on the government website on the deadline day of 7 June.
Cameron used similar tactics to his General Election move of linking contentious issues to the economy.
The PM backs the Remain campaign while Farage is firmly in the Brexit camp.
Remain camp is failing to make coherent arguments about the benefits of immigration.
Ukip leader launched the attack advertisement against the pro-EU PM in Westminster.
Prime minister accused Vote Leave of 'peddling nonsense' in run-up to 23 June ballot.
If polls are right and the result is close we'll know voters don't listen to reasoned argument - as with Trump.
Vote Leave campaigner says it is a 'myth and delusion' the UK can gain prosperity by giving up sovereignty.
Prime minister urges people to 'renew our resolve' to help the victims of the Syrian civil war.
YouGov poll also shows David Cameron's personal approval ratings have dropped.
Workers' rights will be under threat from Tory government in event of Brexit, union bosses warn.
Voting to leave the EU could add between £920-£1,470 a year to average mortgage costs, it is claimed.
Poll states 43% of UK adults will vote to leave the EU, compared to 40% who support staying in.
British-Sikhs say Margaret Thatcher's government gave India military assistance during the 1984 Sikh riots.
The Ukip leader could win £2,500 if the UK votes to leave the European Union.
Milo Yiannopoulos calls Donald Trump 'Daddy', but can he turn on the UK to Trump's New Order?
German chancellor praises Britain as a force for positive change inside 28-member state bloc.
In a smooth performance on Sky News Cameron touched on Turkey, Boris Johnson and Wold War III.
Tata Steel to make final decision on Port Talbot during the week of the EU referendum.