The Columbian is profiling the six candidates who are running for the open 3rd Congressional District seat. With Democratic U.S. Rep. Brian Baird’s retirement from Congress, the seat representing Southwest Washington has grabbed national attention as one of a handful of toss-up congressional races in the nation.Republicans see a chance to retake control of the U.S. House and their first opportunity in a dozen years to win the 3rd. Democrats hope to hold onto the seat by coalescing around a single leading candidate. Voters’ first chance to weigh in on this important race will come in the Aug. 17 top-two primary. Ballots will be mailed late next week.In conjunction with this series, The Columbian is publishing all the candidates’ responses to its questionnaire on major issues that will face the next Congress. Those responses are available at http://www.columbian.com/politics.o Wednesday: David Castillo, Republican.o Thursday: Denny Heck, Democrat.o Friday: Jaime Herrera, Republican.o Today: David W. Hedrick, Republican; Cheryl Crist, Democrat; Norma Jean Stevens, Independent.Republicano Age: 31.o Residence: Camas.o Occupation: Management accountant.o Political background: None.o Campaign funds raised: $41,358.o Quote: “I am not a career politician! Like you, I’m sick of career politicians bankrupting our nation and stealing our liberty.”o Campaign website: www.david4congress.comDavid W. Hedrick found his voice last August at a Vancouver town hall meeting on health care reform. He hasn’t stopped voicing his views since. A self-described Tea Party Republican and a Marine Corps veteran, Hedrick is at ease on a stage with microphone in hand. A video clip of his tirade at U.S. Rep. Brian Baird’s August 2009 town hall on health care reform, at which he warned the federal government to “stay away from my kids” and told Baird, “You don’t have the right to tell me who I pick for my health insurance,” went viral on YouTube, receiving more than a million hits.