Voters tend to prefer politicians with deeper voices, according to an analysis
that political scientist Casey Klofstad conducted of the 2012 election for the House of Representatives. He says deeper voices might be perceived as a sign of strength and competence
, helping candidates win the seat. Susan Miller, a vocal coach who has also analyzed the voices of politicians, says variance in pitch is another key factor in making a voice pleasing to the ear.
But what happens in a matchup between a male and female candidate? In that case, Klofstad says, male candidates might want to adopt a higher pitch, which he says may make the male candidate sound less aggressive in debates.