Some in the party fear it could face a "crisis of legitimacy" if it wins an outsized majority on a thin slice of the vote.
Labour for a Referendum, which has the support of 15 MPs, aims to force Miliband to commit to holding an in/out EU referendum after the next election.
The Labour leader brilliantly ridiculed calls for a Tory-UKIP pact, but his borrowing problem remains.
Ed Miliband has said the state needs to change. He also needs to say how.
There was little in the speech to revive growth and employment this side of the election. But can Labour take advantage?
If there is a lesson to be learned from the road not taken by New Labour, it is that economic reform and political reform are necessarily connected.
At this stage of the electoral cycle, the party needs to be performing much better to justify hopes of a majority in 2015.
The party needs to win back most or all of the four councils it lost in 2009 and make significant gains in the Midlands battlegrounds.
The Labour leader is meant to be capturing the mood of the country as it turns away from the Tories. Instead, he’s picking up Ukip’s moody leftovers.
The Labour leader should explain why borrowing for growth is the economically responsible course.