Foot voting is the ability of people to "vote with their feet" by leaving situations they do not like or going to situations they believe to be more beneficial. Legal scholar Ilya Somin has described it as "a tool for enhancing political freedom: the ability of the people to choose the political regime under which they wish to live".
Communist leader Vladimir Lenin commented, "They voted with their feet," regarding Russian soldiers deserting the army of the Tsar. The concept has also been associated with Charles Tiebout and Ronald Reagan.
Legal scholar Ilya Somin has argued that foot voting requires far less information (on the part of the citizens engaging in it) to be exercised effectively than does literal voting at the ballot box; that foot voters are more strongly motivated to acquire relevant information than are ballot-box voters; and that decentralized federalism promotes the welfare of citizens because it facilitates foot voting. Somin has also used foot voting to make a case for changes in international law to allow easier migration across international borders. Legal scholars Roderick M. Hills, Jr., and Shitong Qiao have used China as a case study to argue that foot voting is ineffective unless meaningful ballot-box voting is also in place. Somin has rebutted this critique.
Models from theoretical biology have been applied to elucidate the causal relationships between foot voting and the dissemination of human cultural characteristics.