One of the ads features a picture of school children studying and says "Carla Nelson? She already cost Rochester schools $1 million." The ad goes after Nelson for voting in favor of a 2003 bill that included $185 million in cuts to K-12 education. It also asks "What if Carla Nelson blindly followers her party bosses again" and opposes early enrollment in Medcaid, which could cost Mayo Clinic and Mayo Health Systems up to $25 million.
I did do a quick archive search and it does appear that Nelson did vote for the education bill. A Rochester Post-Bulletin story from May 23, 2003 reports that the district was projected to lose more than $1 million in 2004 and 2005. As for the accusation about early Medicaid enrollment, it is worth nothing that the decision whether or not to enroll is up to the next governor — not lawmakers.
Nelson is running against 1st-term DFL Sen. Ann Lynch of Rochester. Minnesota Republicans have targeted this seat in hopes they can take it back. I did call Nelson to get her reaction to the ad, but have not heard back yet.