Poll tracker

Follow changes in political fortune with the poll tracker, which measures opinion poll support for Labour, the Conservatives and the Lib Dems. Use it to compare current party ratings and check back through the years to see how they have performed since 1983.

The poll shown selected is the most recent added. For more details, including margins of error and how polls are selected, please refer to the <link> <caption>Poll tracker: How it works page</caption> <url href="http://www.bbc.co.uk/news/uk-politics-13248622" platform="highweb"/> </link> .