This map shows the aggregated votes in the last four referendums on European matters for each constituency. The map is interactive: you can click on constituencies for an overview of Yes and No votes in each.
Voters in constituencies marked in green tended to vote Yes in the recent referendums related to Europe (Lisbon 1 and 2, Nice 1 and 2).
Voters in areas marked in blue tended to vote No.
Note that constituencies have changed over time and the current boundaries are shown here - aggregation is used to approximate voting patterns.