Minnesota’s controversial ag buffer law was a point of contention among candidates for governor at today’s Farmfest debate. Democrat Lori Swanson says she believes that there is a common interest in making sure that people have clean water to drink. But the Republican candidates for governor say farmers were left out of the process. Jeff Johnson says state agencies have become so arrogant that they don’t care, and that absolutely has to change. Tim Pawlenty says farmers got stiff-armed. The primary election is next Tuesday.