 Kọ itẹsiwaju fun paragirafi yii - Ṣaaju ki o to ṣiṣẹ ni Ile Awọn Aṣoju AMẸRIKA, Denham ṣiṣẹ ni Alagba Ipinle California, ti o ṣe aṣoju agbegbe Alagba Ipinle 12 ti California lati ọdun 2002 si ọdun 2010. Ṣaaju ki o to wa fun ipo oloselu, Denham ṣiṣẹ ni ipo ti nṣiṣe lọwọ ati ipamọ ni United States Air Force fun ọdun 16, o si ṣiṣẹ ni mejeeji Operation Desert Storm : ní Iraq àti Operation Restore Hope ní Somalia. 