Final answer:
Lower voter turnout in the United States is attributed to the lack of compulsory voting, strict voter ID requirements, complex voter registration processes, frequent elections leading to voter fatigue, and weekday voting which limits accessibility.
Step-by-step explanation:
One primary reason for lower voter turnout in the United States compared to other democracies is the lack of compulsory voting laws. Countries like Belgium and Turkey have higher voter turnout because they require citizens to vote and may penalize those who do not comply. Furthermore, institutional factors such as strict voter ID requirements and the complexity of voter registration processes contribute to reduced participation. Unlike some nations where voter registration is automatic, the U.S. places the onus of registration on the voter, adding an additional step that can deter turnout. The frequency of elections in the U.S., which can lead to voter fatigue, and holding elections on weekdays also contribute to lower turnout, contrasting with countries that vote on weekends or have fewer elections overall.