Who was the first president to actively campaign for voters himself?

The first president to actively campaign for voters himself was Andrew Jackson. During the election of 1828, he broke with tradition by engaging directly with the electorate, utilizing rallies, speeches, and a grassroots approach to garner support. This marked a significant shift in political campaigning, moving away from the more passive role of earlier presidents. Jackson's approach helped to energize and mobilize voters, leading to his victory in the election.