In modern liberal democracies, offering individual voters in political elections money for their votes is wrong and illegal; offering groups of voters particular benefits in exchange for their votes is constitutionally protected.  Voters do not sell their votes; instead, voters assign their votes to legislative representatives who sell or trade for them.
    Examining the role of coalition costs in political and corporate elections, we argue that these rules protect voters from themselves, from being compelled to approve proposals that leave them individually worse off.  Simultaneously, these rules allow voters to seek particular benefits through collective organization and legislative representation.