I guess some of the local races confused me then, where candidates resigned to focus on their race for a different position, and I somehow got the idea that they HAD to do that.
I'll just go ahead and reverse myself now... I forgot. The Constitution only covers the election of the President, not of any other office at any level. So you could have state/county/city laws that prevent a candidate from holding one office while running for another, but those wouldn't apply to the election for the POTUS. Obviously it'd be bad form to do so though.
I dunno that there are any such laws, but there could be.
I hate trading in Image Quality though
Eh, you couldn't run UT2k4 at "Ultra" quality, D3 at "Highest" (or whatever the hidden level was), or BF2 at highest w/o a 512M card (well... you can... you just have massive texture thrashing and crappy fps). For UT2k4 and D3, however, the differences between the hidden texture quality levels and the highest normal level were insanely minimal.