A voter registration drive is an effort, often undertaken by a political campaign

Political campaign

A political campaign is an organized effort which seeks to influence the decision making process within a specific group. In democracies, political campaigns often refer to electoral campaigns, wherein representatives are chosen or referendums are decided...

, political party

Political party

A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...

, or other outside groups (partisan and non-partisan), that seeks to register to vote those who are eligible but not registered. Sometimes these drives are undertaken for partisan purposes, and target specific demographic

Demographics

Demographics are the most recent statistical characteristics of a population. These types of data are used widely in sociology , public policy, and marketing. Commonly examined demographics include gender, race, age, disabilities, mobility, home ownership, employment status, and even location...

 groups that are likely to vote for one candidate or other; on the other hand, such drives are sometimes undertaken by non-partisan groups and targeted more generally.

On October 4, 2004, a voter registration drive in Austin, Texas

Austin, Texas

Austin is the capital city of the U.S. state of :Texas and the seat of Travis County. Located in Central Texas on the eastern edge of the American Southwest, it is the fourth-largest city in Texas and the 14th most populous city in the United States. It was the third-fastest-growing large city in...

 led by the Travis County Democratic Party

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

registered over 12,000 people to vote in less than 24 hours.