The Chancellor's denouncement of those who want to "pull up the drawbridge and shut Britain off from the world" applies to a significant number in his own party.
A new poll shows the party trails in 25 must-win Conservative seats.
The PM recognises how any hint that he could depart could galvanise the "No" campaign - but he is preparing for defeat.
The combined attacks by the Lib Dems and Labour are further weakening public support for Gove's project.
Labour knows the state isn’t perfect. But the coalition is giving power to big corporations, not to people.
The inclusion of the party would help to split the left-wing vote and harm Labour and the Lib Dems.
Transforming the right's standing among ethnic groups requires a longer march than is available in the final year of this Parliament.
In Westminster, it is seats that count. And Miliband's party is still best-placed to win the most.
Labour has a 16-point lead over the Tories, with the Lib Dems in fifth place behind Ukip and the Greens.
The Chancellor remains an unashamed neo-conservative and a champion of military intervention.