Ah yes, Downsian in the portion of the theory Downs created that still has emprical validity (voters are rationally ignorant) and not in the sense of the easily falsified axiom that is most commonly attributed to him (parties in two-party systems seek the median voter).

My understanding of the axiom is that it applies to individual candidates in plurality elections, not to parties, which are much more complex actors, as they must satisfy multiple constituencies, geographic and otherwise—particularly in the presence of multiple electorates in the same geographic constituency. The absence of a single median voter to converge on makes the convergence unlikely…