I am really not sure how someone with a bullhorn or even a gun standing outside a polling station could prevent me from voting. On the other hand, this strategy would do it for me: That was the facade of the headquarters of Mussolini's Italian Fascist Party Federation in Rome during the 1934 elections. The vote was held in the form of a referendum, with the National Fascist Party, an official state organ, composing a single party list to be either approved or rejected by the voters. Voters were given two ballots, one saying "Yes" which was on Italian tricolour paper, and one with "No" which was on white paper. After depositing their ballot in the private voting booth, voters had to return the unused sheet to the scrutineers, ensuring that their vote was known to officials. The list put forward was approved by 99.84% of voters. RIP 0.16%.