Citizens who wish to participate in direct democracy and hold direct elections must actively serve the public. Have great interest in an issue. Gather enough signatures on a petition. Cooperate with government officials.

Gather enough signatures on a petition.

Explanation:

One of the most effective ways to participate in direct democracy is to gather signatures on a petition, in order to have the petition in the ballot box.

This is direct democracy because it gives citizens the power to decide by themselvers, without the intermediation of representatives, whether they want or not to approve a particular measure.

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