ABERDEEN, S.D.(WNAX)- Democrat Brian Bengs is working to ramp up his campaign challenging incumbent republican Senator John Thune.

He says his message is time for a change.

Bengs says money, finance and taxes is a central theme.

Bengs says he would back a wealth tax.

Bengs is a former instructor at Northern State University and a veteran of the Navy and Air Force. This is his first run at any elective office. Thune is seeking his fourth term in the Senate.