(Salem, OR)  --  Governor Kate Brown is the winner in the race to keep her seat.  Early ballot returns show the Democrat leading with 50-percent of the vote, compared to challenger Knute Buehler's 44-percent support.  The Republican Buehler conceded the race less than an hour after ballot returns started coming in.  The two candidates funneled millions into their advertising campaigns in what was the most expensive governor's race in state history.