The Guardian and ICM have been conducting monthly polls since 1984. Here is the full data going back to then.
Plus we can bring you the trends in the big questions and how they've changed over time. The latest poll results show that support for the Conservatives has risen to 37%. Labour are six points behind at 31%. The Liberal Democrats have seen support drop to 8% and support for 'other' parties (including Ukip) has remained steady at 24%.
The data for the Lib Dem category prior to 1988 refers to the combined results for the Liberal party and the Social Democratic party.
Download the full data
• DATA: download the full ICM poll results
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