there certainly is a russia and china media involvement in foreign election. its very visible in the Taiwan elections. and russia certainly was involved in the USA elections. for india and germany though the fake news media posts mostly comes from political parties them self. I dont like though how facebook solves it. facebook thinks election is an excuse to ask anyone on facebook (even though they are not posting political content) for a picture of their ID or passport in exchange for not getting kicked off facebook. hence im not on facebook.

BTW I encourage any european to do a survey before going to election such as voteswiper. the number of political parties running for election is overwhelming. I found the party I am voting for before doing 2 different surveys and then after doing the surveys i feel much more sure about my vote.

EDIT: perhaps russia does try to disturb the election but more by supporting certain parties:

According to the report, Russia's efforts are aimed at boosting support for parties that are either euroskeptic or friendly to Russia. Its messaging also questioned the significance of the European Parliament to try to lower voter turnout.

source