Logrolling creates a market within which votes are exchanged as a sort of currency, and thus, facilitates the political process that produces the highest valued outcomes (Holcombe 2006). If individual participants recognize the value of their own vote, they are motivated to trade. When methods of trade do not conflict with given standards or ethical procedures, individuals naturally seek mutually advantageous vote trades. An individual may effectually, but imperfectly, "sell" his vote on a particular issue to, in return, secure votes from other individuals on behalf of legislation he prefers (Buchanan and Tullock 1962).