Muenzaniso wesarudzo ine mufungo unotibatsira sei kunzwisisa kuda kwomunhu kuvhota uyewo kuti ndiani waachavhotera?
Downs naRiker vakauya necalculus yokuvhota, fomu, R=pB-C+D, apo R ingangoita kuti mumwe munhu avhotere, p ingangoita kuti kuvhota <unk>kunge kuchikosha<unk>, B ingangoita <unk>kubatsira<unk> kana kuti kubatsirwa nokuvhota, C ingangoita mutengo wokuvhota, uye D ibasa romunhu. Tichifunga kuti pB inowanzova 0, equation inova R=-C + D uye kuitira kuti R ive kukosha kwakanaka (zvinoreva kuti mugari achavhota), tinoda basa revanhu kuti <unk>areruke<unk> mutengo wokuvhota. Muenzaniso weRational Choice une maonero maviri anokwikwidzana pamusoro pokuti vavhoti vanosarudza sei kuvhota. Chimwe ndechokuvhota uri pedyo. Muchiitiko ichi, muvhoti anosarudza mukwikwidzi wavanonyanya kuwirirana naye maererano nenzvimbo inogara mukwikwidzi iyeye pamutsetse wezvemasikirwo/wezvokuchengetedza. Rumwe rutivi nderwokuvhotera kwakananga, uko kunotaura kuti muvhoti achasarudza ani naani ari "kurutivi" rwavo rwechikero. Somuenzaniso, muRepublican aizovhotera mukwikwidzi weRepublican kunyange kana vari pedyo nomumiriri weDemocratic pachiyero.