This paper gives an overview of electronic voting, which is being tested and implemented by an increasing number of countries, with varying degrees of success. Voting methods that have been used so far, such as paper ballots, punch cards, optical scanning and mechanical lever voting machines, each have their own drawbacks, such as safety risks or high financial costs, which is the reason why more attention is being paid to electronic voting as a new voting method. In order for electronic voting to be as efficient as possible, various organizations, such as the Council of Europe, have published guidelines and standards for its implementation, with the focus set on accessibility, transparency and, mainly, the security of the system. Properly implemented electronic voting systems can significantly improve the speed and efficiency of the electoral process; however, concrete examples show how device malfunction and simulated and real cyberattacks can decrease the secrecy and integrity of elections. Out of the three countries whose electronic voting system use has been described in this paper (the United States of America, Estonia, and Belgium), Estonia seems to be the only one using it successfully and efficiently. The underlying reason may be the fact that Estonia has been using the Internet to provide governmental services for a number of years; therefore, the transition to electronic voting was the logical next step. National-level electronic voting in Croatia currently only exists as a public debate topic. Telecommunication experts, however, claim that the country possesses the required infrastructure; whether Croatia will implement, or at least try out electronic voting in the future, remains to be seen.