My exploration of the European Parliament's twittersphere hints at a strong trend: representatives of anti-EU groups receive an amount of attention on Twitter (as recorded by "favorite" and "retweet") that is disproportionate to their electoral ratings.
https://www.europeandatajournalism.eu/Tools-for-journalists/Quote-Finder/Quote-Finder-notes/Tweeting-above-their-weight

In 2017, tweets by members of the EP group that includes UKIP and Italy's Northern League received on average about 5 times more engagement than the average MEP. Even calculating the median, rather than the average, in order to reduce the impact of individual Twitter super-stars, the trend remains strong. Also leftist and green EP groups receive disproportionate attention, even if to a lesser extent. https://social.giorgiocomai.eu/attachment/19400