The NHS has become a key election battleground with a Conservatives pledge of an extra £8 billion a year for the NHS in England by 2020. Both Labour and the Liberal Democrats have attacked the announcement as an "unfunded" spending commitment.
Meanwhile, Labour is pledging one-to-one midwife care for every woman during childbirth as it launches its health manifesto.
Ukip leader Nigel Farage described the Labour-Tory battle over the NHS as a "game of poker" in which whatever one party says, another party raises it.
He told Sky News: "It's all well and good to talk about an extra £8 billion by 2020, but there has been absolutely no suggestion provided as to where the money is going to come from.
"The real problem the NHS has got is that our population is rising so rapidly that we find ourselves desperately short of enough GPs and A&E facilities.
"If we were to keep our population at a reasonable number, I suggest it might be easier to keep the NHS free at the point of delivery."
The NHS has become a key battleground for the political parties as election day moves ever closer.
Labour is to launch its Health Manifesto which it says will "put personalised care at its heart".
The Conservatives have upped the ante in the key election battleground of the NHS but are accused of issuing an "unfunded" spending pledge.