The Liberal Democrat share has increased by 11 points since last month, representing the highest score that Ipsos has recorded for this party since it formed in 1988.
With the election less than three weeks away, Ipsos's April Issues Index shows that the economy remains the most important issue facing the country today, as has been the case since September 2008.
The party manifestos suggest a real difference of emphasis between Labour and Conservatives on the role of the state, but will the public accept David Cameron's invitation for greater involvement, local control and personal responsibility?
In this latest podcast, Ben Page explains that, despite statistics telling us that crime has fallen, the perception and fear of crime is higher than ever.
Round one to Nick Clegg... Ipsos recruited 36 undecided voters for the BBC News at Ten, each watching one of the three leaders, to give their reactions as they watched the debate unfold live.
As leaders become more and more significant in attracting people to their party, the televised leaders debates are likely to be important in determining the outcome of the election. What impact will the debates have on how people vote?
