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																	| Tom 
																	O'Halleran 
																	(Democratic 
																	Party) was a 
																	member of 
																	the U.S. 
																	House, 
																	representing 
																	Arizona's 
																	1st 
																	Congressional 
																	District. He 
																	assumed 
																	office on 
																	January 3, 
																	2017. He 
																	left office 
																	on January 
																	3, 2023. 
																	O'Halleran 
																	(Democratic 
																	Party) ran 
																	for 
																	re-election 
																	to the U.S. 
																	House to 
																	represent 
																	Arizona's 
																	2nd 
																	Congressional 
																	District. He 
																	lost in the 
																	general 
																	election on 
																	November 8, 
																	2022. 
																	O'Halleran 
																	previously 
																	served in 
																	the Arizona 
																	State Senate 
																	as a 
																	Republican, 
																	representing 
																	District 1 
																	from 2007 to 
																	2009, and in 
																	the Arizona 
																	House of 
																	Representatives 
																	from 2001 to 
																	2006. In 
																	2014, 
																	O'Halleran 
																	left the 
																	Republican 
																	Party, 
																	citing 
																	disagreement 
																	with how the 
																	party 
																	handled 
																	education, 
																	water, and 
																	child 
																	welfare 
																	issues. He 
																	ran 
																	unsuccessfully 
																	as an 
																	Independent 
																	candidate 
																	for District 
																	6 of the 
																	Arizona 
																	State Senate 
																	that year. 
																	He again 
																	switched 
																	parties when 
																	he first ran 
																	for U.S. 
																	Congress as 
																	a Democrat 
																	in 2016. He 
																	was elected 
																	the policy 
																	co-chairman 
																	of the Blue 
																	Dog 
																	Coalition in 
																	November 
																	2018. |  |