While economy is definitely the top issue, Asian Americans have one other item in the top priority list, i.e., personal safety, or crime rate. On average, one Asian immigrant gets killed per year in homocide in the greater Houston area, mostly by a black man, occasionally by a Hispanic. (The number may be higher because I only care about high profile cases and mostly only cases involving Chinese immigrants.) And there's frequent robbery, once per week maybe. This is one of the reasons Asians hesitate about Obama.
Let me use the term "black" here instead of "African Americans" but I have no intention to be politically incorrect. The reason for this choice of word is that American black people have very different traits compared to the African Americans proper, those that grew up in Africa and immigrated to the US, or to a less extent those whose parents, but not grandparents which is too far away, grew up in Africa. I want to bring to my Asian friends' attention that Obama is nearly a true African American. I won't say much here about the difference but I think you can guess what it is.
As I alluded to in my earlier off-topic posting, assuming no ill intention, an intelligent man does good deed, and tremendously good deed if given high power, just as a dumb man does dumb things, and tremendously stupid things if given high power. Although McCain could bring some prosperity, or rather less economic disaster, to Houston, than Obama, the wide area properity or less economic damage would be better achieved by a man with more brain cells. Lastly, an America with weaker emphasis on war mongering will win more friends in the world, and if done right, less hatred from Americans' enemy and terrorists. (I bet most people don't know the three reasons Bin Laden quoted why he hated the US. It's in a long PBS article in late 2001.)