<prompt> Translate the following text to EnglishUkiongezeka kwa idadi ya watu na kuongezeka kwa uhalifu ni sababu kuu za kupungua kwa idadi ya wagombea wa mitaa, lakini maslahi pia yanapungua, alisema Smiley Brown.  <response>: Population growth and a corresponding increase in crime are primarily responsible for the dwindling number of local candidates, but interest is also waning, Smylie Brown said. 