Once one party manages to unify pragmatic and more ideological support, the other will be locked out.
The UKIP leader's figure is "spot on", says Conservative MP Philip Hollobone.
The Tories' plans mean that tax giveaways can only be funded by even deeper cuts somewhere else. Labour should take a different path.
If the Labour leader is a Marxist, so are most of the public. They recognise that the market isn't working for the majority.
Unlike Labour's Jobs Guarantee, Osborne's plan will mean people are still allowed to languish on the dole for years without ever having a proper job.
The Chancellor insists that his economic plan is a plan for living standards. But the pre-crash years showed that growth is no guarantee of rising incomes.
At a time when millions of people are facing a cost of living crisis we should be helping all families and not just some.
Including, only a third of married couples will actually gain, it discriminates against single parents and it reduces work incentives.
The party needs to show how new 'guarantees' will be delivered. If not, the Tories, with their offer of more money in parents’ pockets, could win the all-important female vote.
Conservative group Renewal's pledge card calls for an increase in the minimum wage, the building of one million homes, free party membership for trade unionists and action against "rip-off companies".