Many European countries also have "election silence", basically a blanked ban on political speech, usually for a day or two before and during an election. This is supposedly done to "give people space to deliberate without undue influence."

When such laws were introduced, they basically only applied to mainstream media organizations and actual political agitators; debating politics at the family table was (and still is) allowed. However, the way they're worded, they also apply to any user sharing / liking political posts on social media.