A lot of Russian support has been under the radar until recently;
"In June ECFR carried out the
first comprehensive survey of ‘insurgent’ parties in Europe. It found that, despite their differences, a majority of them are positively inclined towards Putin’s Russia and pursue policies that promote Russia’s interests in Europe."
"To what extent do the insurgent parties align with Russia? A majority of the 45 insurgent parties identified by ECFR were favourably inclined towards Russia and sympathised with Russian positions. The most pro-Russian of these parties (of a significant size) on the far right are: the AfD, FPÖ, Greece’s Golden Dawn, Hungary’s Jobbik, France’s Front National, Italy’s Northern League, the United Kingdom Independence Party (UKIP), and Belgium’s Vlaams Belang (VB). On the far left, the most pro-Russian parties are Cyprus’s AKEL, Germany’s Die Linke, the Czech Republic’s KSCM, Podemos in Spain, and Syriza. The Italian Five Star Movement and the Human Shield Party in Croatia also belong to the pro-Russian camp."
The upsurge of populism in Europe has provided Russia with an ample supply of sympathetic political parties across the continent.
ecfr.eu