At elections, voters choose among substantive programs and correspondi
ngly, endow winning parties with determinate policy mandates. The arti
cle inquires into a neglected side of this 'mandate theory' of electio
ns: it explores the normative foundations of democratic mandates. The
general norm, which demands that parties honor their campaign promises
, is quite uncontroversial. The essay therefore reconstructs the contr
oversial logic of norm application: it argues that different kinds of
promises create different kinds of commitments; it explains 'rules of
transgression' which specify improper promises and 'rules of exception
' which allow parties to abandon their campaign pledges; and it looks
at structural uncertainties electoral mandates are associated with. As
the article concludes, electoral accountability is a complex and 'ess
entially contested' task. It provokes (and presupposes) public controv
ersies which in the last instance can be settled only by the supreme j
udge, the voter.