Democratic Senate candidate Jim Slattery officially filed for office Tuesday morning.
He paid a $1,672 dollar fee to guarantee his spot on the ballot.
Slattery is a former congressman.
He says he wants to run for senate to make changes in Washington regarding the economy and Iraq war.
"Whether you're talking about the War in Iraq or energy policy or the fiscal policy of the country or health care, there's this sense that Washington is not working and the United States Senate, it just isn't getting the job done."
Slattery faces Lee Jones in the Democratic primary on August 5th.
He hopes to take on incumbent Republican Senator Pat Roberts in the general election this fall.