 Gregory's cousin, Camille Jazzy Jenkins, posted on Facebook Wednesday that heat exhaustion was the cause of death, but that has not been confirmed by the medical examiner. Bob McClay, Arizona News Radio. With the exception of Tucson Congressman Raul Grijalva, no Arizona congressional Democrats are pushing for President Joe Biden to bow out of his race for re-election. Arizona House Democrats are playing their political cards close to their vests, but Senator Mark Kelly is all in for Biden.