because he is beyond contempt in my opinion for his past actions
Genuinely asking here: what might they be?
and I believe his scattergun, non prioritised, poorly thought out approach in the manifesto will wreck the country's economy.
Well, here's the thing: the economy, when struggling, does better when the government spends more, because Keynesian priming the pump holds that you give low-paid people more money and they spend it locally - they can't afford to save, or stash it offshore, as tax cuts to the rich achieves. They buy stuff they need, which creates employment, which.. money isn't a zero sum game, where there's only so much to go around anymore, because it's electronic - not in any concrete form - and so it can go up or down in quantity with the press of a button. That's why quantative easing was never the inflation risk people claimed - was when you printed money, but these days all the Bank does is electronically invent the funds to buy up large pension funds, gilts etc, and they then have the ability, should it cause serious inflation, to sell them again (inflation meaning the value would rise in purely number terms) and then delete the imaginary money - poof, money gone, and immediate deflation.
Cuts to the rich paid for by austerity for the poor are bad for the domestic economy, because it removes cash guaranteed to circulate in favour of cash highly likely to be invested elsewhere, or stored overseas. We averted global economic meltdown largely because the head of the Federal Reserve when it hit had a PhD in how to manage economic crises of exactly that type, modelled on the Great Depression.
And the deficit has ballooned more than ever before under the current administration, so austerity clearly hasn't done much for the nation as a whole, either.