I'm not really sure that you would find legislative measures targeted only at disinformation campaigns that targeted elections. I think it would be more broad. I think it would be regardless of the election cycle.
We saw the most aggressive measures, like outright bans. Most of them have been in Ukraine, but also, in the EU, there was a ban on Russia Today and Sputnik. Ukraine has gone further. They also banned channels not owned by the state, but channels still spreading the same disinformation that was being spread by the channels owned by Russia—channels owned by a Ukrainian oligarch, Victor Medvedchuk.
Most of Europe has not done that so far, but these outright bans would probably be the most aggressive solution.