How do campaigns mobilise voters?

Presidential campaigns invest heavily in "Get Out The Vote" (GOTV) operations—the ground game of identifying supporters, registering new voters, and ensuring they cast ballots. In close elections, turnout operations can be decisive.

The registration barrier

The US does not have automatic voter registration in most states. Eligible citizens must take active steps to register, often by a deadline weeks before Election Day. This creates a mobilisation challenge: campaigns must both register new voters and ensure registered voters actually cast ballots.

Some states have adopted automatic voter registration (registering eligible citizens when they interact with government agencies), same-day registration, or other measures to reduce barriers. Registration rules vary significantly by state.

The ground game

Modern campaigns combine sophisticated data analytics with traditional shoe-leather organising. Voter files—databases containing information about registered voters and their voting history—allow campaigns to identify likely supporters who might not vote without contact.

Field operations include door-to-door canvassing, phone banking, text messaging, and digital outreach. Campaigns recruit volunteers and hire organisers, particularly in swing states. The goal is personal contact: research suggests direct conversations are more effective than impersonal advertising.

Early voting and mail ballots

Many states offer early in-person voting, sometimes for weeks before Election Day. Others allow no-excuse absentee voting by mail. The 2020 election saw unprecedented mail voting due to the pandemic, leading to extended counting periods and ongoing debates about election administration.

Campaigns must adapt their GOTV strategies to these varied voting windows, "banking" votes early while maintaining Election Day operations.

Turnout patterns

Presidential election turnout has ranged from about 50% to 66% of the voting-eligible population in recent decades. Turnout varies by demographics, with older, wealthier, and more educated voters participating at higher rates. Campaigns attempt to either expand the electorate (bringing in new voters who favour them) or focus on persuading existing likely voters.