Russian money pays Farage well, it also pays certain sections of the media well enough to bolster Farage's message which is Russia's message. They got a success with the rise of UKIP from minority isolationist party to thought leaders, didn't even need to win because their ideas became reality and showed how misinformation can be power.
Now there's far-right reactionary parties making huge gains in several democratic countries or indeed winning to the degree that it feels silly to not see the correlation in the rise of fascism being an engineered one.