Democrat Andrew Duck wasn't sure about trying a third time to defeat U.S. Rep. Roscoe G. Bartlett in Maryland's 6th District.
Then, people asked him to run again, he said.
"Our country is in trouble and we need new representation in Washington," Duck said.
Duck lost to Bartlett, a Republican, in the 2006 general election.
In 2008, Jennifer Dougherty defeated Duck in a Democratic primary.
Duck, 47, of Brunswick, Md., said his two previous campaigns have helped him get his name and message throughout the 6th District, which covers Washington County and parts or all of seven other counties.
Two years ago, Duck focused on how the United States was handling the war in Iraq.
Now, he lists jobs as his top concern. He said Congress needs to set conditions for more people to find work.
He said the U.S. needs to close its trade deficit and he favors financial reforms that keep banks from making risky investments.