Backtracking on climate policy would make achievement of a global climate agreement much more difficult, with disastrous results.
The Conservatives can't quite figure out how to both cut defence spending and procure new kit the UK can actually use.
The Lib Dems have promised to invest heavily in the schools budget.
The Greens offer a fresh outlook on immigration in the UK, but their manifesto contains shades of uncertainty.
The Green manifesto allows for initial funding, but does not say how tackling mental health would be paid for thereafter.
Ambitious climate targets, but nature policies leave a lot to be desired.
UKIP's immigration policies should have cleared away any ambiguity about what the party wants. Instead, they've added to it.
UKIP has some eye-catching spending promises but they are subject to a number of uncertainties.
The Lib Dems address key issues in skills and apprenticeships, but our expert takes issue with some of their policies.
The Lib Dems are making a big noise about mental health – but their manifesto's pledges are too thin to be taken seriously.
Our experts find that the Green Party's generous pledges on education will cost them.
The Conservatives will have to meet their climate targets somehow, whether by fracking or offshore wind.
With the most rapid deficit reduction programme, the Conservatives will struggle to achieve economic growth
Conservatives throw quality and status out of the door in bid to increase apprenticeships.
Labour's 2015 manifesto has a feel that we are not yet getting their full thinking on how Britain should be governed.
Our expert shows that public opinion may not be the best guide for effective policy.
Our experts analyse the evidence on the Conservatives' big ticket policies.
The Conservatives' statements on health do not stand up to scrutiny, while their promises on mental health are vague
Research indicates that Conservative proposals will increase incentives for the unemployed to return to work, but it won't reduce poverty.
Labour's green jobs numbers add up, but the picture's less clear on fracking.