Support for the UK Independence Party (Ukip) has reached a new high of 15%, according to a poll published on Saturday night.
The anti-EU party's rating has risen by another percentage point in the past fortnight as its fortunes continue to rise, the Opinium survey for The Observer found.
Its support is almost double that for the Liberal Democrats, languishing in the same poll on 8%. Labour were on 39% with a 10-point lead over the Conservatives on 29%. All three main parties were unchanged from a fortnight ago.