The candidates differed on many issues: notably, using your tax dollars to subsidize private schools. Juneau opposes it, as do most Montanans. Welch supports it.
Juneau ran on her record of Montana’s kids scoring among the top ten states in the nation for reading, math, and science. Welch said she thought some changes to “process” were in order, but didn’t offer specifics.
The candidates also differ vastly in experience. Juneau has a post-secondary degree from Harvard in education and a law degree from U of M, and has worked in education in Montana and as a teacher her entire life.
On the other hand, Welch is a transplant from California who lacks familiarity and experience with local education concerns. When asked what qualifications she had to advocate for education in Montana, Welch cited—I kid you not—her work as a legislative staffer in the infamous Bat Crap secession session of 2011. Not something I would admit in public–even if I were one of the 18-year-old college Republicans who typically fill these positions.
The AP has a recap of the debate online here.