The Eurovision song contest is not only a fixture of the musical calendar, but also a source of rich data on people’s attitudes towards their favourite, and not so favourite, musical performers. This heatmap shows the public votes for the 2019 contestants, broken down by originating country. While they are clear winners (hello Sweden & The Netherlands), we also see geographical and cultural splits that can be mined for insights.
I wrote a short article looking at the discrepancy between public and judge votes in Eurovision data going back to 2014. You can find it here.