There should be a minimum of 11 I, Robot votes based on the first round, so this early lead by Ethan Frome could be swallowed easily as the vote progresses.
I'm not sure if I, Robot will suffer from any classic backlash. There might be those who don't particularly think of it as a classic. Ethan Frome fits into the category quite easily. So where a different selection (say Crime and Punishment) might have divided the final vote, it's possible that this run-off vote has a more "black and white" feel for some.
But that sort of consideration is hard to predict. Although I personally wouldn't jump to classify I, Robot as a classic. At the same time, I don't object to its inclusion. I possibly would have voted for it myself in the run-off if I happened to own it already.