That was Glacier county dumping in.
What's left is mostly GOP.
I think it all comes down to Yellowstone. If it's a wash, or a Burns lead, then he wins.
Looking at what's left out there in Montana:
Cascade should give Tester another 500 votes net.
Fergus should give Burns about 1000 net.
Gallatian should give Burns, maybe, 500 net. Or be a wash.
Lincoln should be worth another 1000 net for Burns.
Megher a couple of hundred.
So, yeah, he needs a good result out of Yellowstone to win, at this point.