The rise of UKIP and the fall of the Lib Dems explains why Labour is maintaining a lead approaching the final year of this parliament, writes Roger Mortimore in the New Statesman.
Ipsos's Political Monitor for April shows that it has been a good month for George Osborne, with satisfaction in his performance as Chancellor at its highest level since Gordon Brown in 2006.
Q In choosing between [party leaders' names], which leader do you think ...
...best understands the problems facing Britain?
...would be best in a crisis?
...leads the most united team?
...is best able to deal with the challenges of the 21st century?