Iowa definitely winnable. She has the ground game. He doesn't.
http://elections.huffingtonpost.com/pollster/2016-iowa-president-trump-vs-clinton
Georgia looks more difficult. Will depend on how much she picks up using the organisation of her supporters on the ground.
http://elections.huffingtonpost.com/pollster/2016-georgia-president-trump-vs-clinton
I think her ability to turn folks out may also swing the senate, where the polls are moving slightly in the Republicans' direction. It's going to be harder to get people to vote for a senate seat than the presidency. Trump's laziness could cost the GoP in a major way.
Also, if Republicans get the impression Trump is imploding, they probably won't head to the polls. That would mean a massive landslide across the board. This is why they need to lie about the state of the race. They must know they are losing.