Wow, this topic is likely to attract lots of 'your party will destroy this country, my party is perfect' posts. I hope not, but you don't always get what you want.
China and US, as with any two politically and economically strong countries, have a love-hate relationship and so we can always expect contradictory statements to be coming from both governments.
I hope they both realize that despite all the political posturing and economic competition, in the end both countries receive an enormous benefit from each other's existence and that both will continue to prosper as long as they remember that and continue to work to smooth out some of the worst conflicts before things ever get dangerously out of hand.
I'm not sure either candidate will be better. No amount of realistic tax incentives will stave off a shift of jobs if the underlying economics don't work. (Neither will a like amount of trade obstructionism).
That said, we're starting to see companies in the past two years realize that we can do electronics manufacturing really, really well by adding design value and services on top. That's happened since Obama was elected and there weren't a ton of incentives that I can see that spurred that. I'm not sure it would have been any different if McCain had won.