As the economy accelerates, it will become increasingly difficult for Osborne to defend the 1% cap on public sector pay rises.
When Cameron derides Miliband for not wanting to talking about the economy, he forgets that, for most voters, living standards are the economy.
It is not sufficient for Conservatives just to focus on reducing green taxes. We need to stop the corporate juggernaut and tax companies' excessive profits.
If this is a recovery, the voters will ask, why aren't we feeling it? Cameron and Osborne need to offer answers.
If they are to remain the largest party after 2015, the Conservatives need the Lib Dems to win back left-leaning voters in Tory-Labour marginals.
The Deputy PM vowed in his conference speech that the Lib Dems "will keep this government green" - and he meant it.
The balance of credit for getting the Tories even this far has clearly tilted towards the Chancellor.
The cap is less a serious act of policy than a political weapon designed to trap Labour on the wrong side of the argument and to demonise the unemployed.
The smaller the deficit becomes, the harder it will be for the Conservatives to make it the defining economic issue. Labour can continue to shift the debate to living standards.
Contrary to the media scare stories, the actual cost of "health tourism" is estimated at £70m, just 0.06% of the NHS's annual budget.