London Eye lit by Facebook election chat

The London Eye is lit on May 1, 2015, in colours reflecting the amount each party is discussed on Facebook

The London Eye was lit up Saturday in party political colours reflecting the amount of social media interactions about them on Facebook.

The giant observation wheel overlooking the Houses of Parliament on the other side of the River Thames is being lit up this way every night in the run-up to Thursday's general election.

The more a political party crops up in people's interaction on Facebook, the bigger a portion of the ring gets lit up in that party's colours.

An interaction is calculated as either a like, share or comment, such as a post or replied post on the social networking site.

Between January 1 and May 1, the United Kingdom Independence Party (purple) was the most-discussed party, with 15.6 million interactions and three million people talking about UKIP.

The Conservatives (blue) were the second most talked-about party with 12.2 million interactions from 2.5 million people.

Then came the Labour Party (red) on 9.7 million interactions.

They were followed by the Liberal Democrats (orange-yellow) and the Scottish National Party (yellow), both on two million.

The Green Party (green) were on 1.3 million.

Friday night was the first day of a week-long display to bring the online election conversation to life within view of parliament.

"Politics is huge on Facebook -- we expect it to be the most-discussed topic in the UK this year," said Elizabeth Linder, Facebook's politics and government specialist for Europe, the Middle East and Africa.

"We've seen over 52 million interactions related to the general election so far this year."

The social media data can be compared with the latest BBC poll of polls, which shows the main two parties neck and neck, with neither thought likely to win a majority.

The Conservatives were on 34 percent; Labour 33 percent; UKIP 13 percent; the Lib Dems eight percent; the Greens five percent, and others combined six percent.

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