If PMTM wants to win the next election, spúnking money on tanks instead of the NHS isn't the way to do it.
And so what happens when there is literally no money left in other pots (defence, policing, borders, trading standards, justice system, prisons, transport, Foreign Office, Trade, etc)?
At some point, a PM with balls is just going to have to stand up and explain in words of one syllable that there just isn't another £20bn to throw into the NHS or housing benefit.
Wrecking the country just to buy NHS votes is a cowardly, destructive course of action. Thats the central easy-vote methodology of leftist parties that have no viable economic manifesto.
A so-called Conservative government should be trying to educate the population about money, reform the horrific financial black holes of welfare, reduce the debt burden, and keep the other institutions of the country in decent shape.
Throwing cash at the NHS is actually profoundly counter-productive from an electoral point of view. The comments sections of the tabloids (ie the vox populi of the mass unwashed) are overwhelming in favour of the NHS being thoroughly reformed before money is thrown at it. Add to that the millions who withold their conservative vote because they do not want high tax/high spend socialism, and there is a significant vote in financial prudence.
IMHO May is going to lose the next election anyway. Every week or so she is angering and insulting sections of the dwindling conservative voter base.