Apparently Curtis has appeared at rallies sponsored by MAIG, and she's criticized Max Baucus (!) for being too pro-gun. Honestly, I think Daines will eclipse 60.
Daines-61%
Curtis-36%
Roots-3%
You think Curtis speaking out for a policy that 90% of Americans support is going to send Daines over 60?
It's not like she's a hardcore gun grabber or anything (at least as far I could find), just a proponent of national background checks in a bill written by the most conservative Democrat in the Senate and a Tea Party loon.
This is Montana. Just because it is a purple state on a statewide level does not, in any way, mean that gun control is insanely popular.
Anyway, I predict the following:
Daines: 54%
Curtis: 40%
Roots: 6%