Short answer
Not exactly. Engagement followed votes, but less than proportionally and on different parties: the largest party by votes received the most engagement in only about a quarter of country-years.
What the evidence shows
- The study covers 107 party pages in 16 European countries from 2010 to 2020 (875 party-years, 431 million interactions). A party with twice the vote share of another received about 1.7 times the engagement share.
- Small parties posted nearly as much as large ones, so the pattern came almost entirely from what each post received.
- Parties with more than a fifth of the vote received a median of about 40% less of the engagement than of the vote, while those with less than a tenth received slightly more.
- Populist parties drew more than their vote share and governing parties less. None of this changed detectably over the decade.
Caveats
Engagement and votes are different things: the paper describes how audiences' attention was distributed, not what any party deserved.