You know, I am concerned about this, but it does seem a little weird. For instance I can't think of much to say or advice to give beyond, have food, water, guns, shelter and stay indoors watching the news.
I would not be trusting the news. They will be sanitizing any reports of rioting by Obama supporters. By the time you get any useful information from the news media it will be too late.
I think about all you can do is stay away from places likely to be riot zones. I think you can figure out by yourself where those areas are.
Secondcitycop is suggesting cops living in certain areas of the city evacuate their families to the northern suburbs for the day. Its a good idea if you live in iffy areas, or in the case of Chicago basically anywhere within a 5 mile radius of Grant Park.
If you live in Chicago, be forewarned. One of the plans in case of riot is to raise the bridges to contain the rioters. I would hate to be caught on the riot side of the containment with no chance whatsoever of getting out. If you want to get out you must get out ahead of time, otherwise you are stuck. There is nothing worth dying for at the Obama rally/riot. If you live in that area, there is nothing in your apartment worth dying for. The only buildings the cops will be protecting will be government buildings. You are completely on your own. There will be no police protection at all for average citizens in the riot zone(s)
If you insist on staying in the likely riot zone(s) be aware that it may be days or weeks before things get back to normal. Get water and food, and blankets now. It may get cold in your apartment if the power is off for several days. Fill your bathtubs with water for flushing the toilets as water supply could also be interrupted. Basically if you insist on staying in a potential riot zone you need to consider this to be a SHTF event and prepare accordingly. The best thing is to stay away, or get away.
One other thing. if you don't have it, get renters insurance if at all possible on Monday. It may be too late, but some insurance companies may be foolish enough to write policies the day before a riot.
There is also a chance there will be no riots at all. But there is just no way to tell, and the only safe thing to do is take proper precautions. You don't fasten your safety belt when you get in the car because you think you will get in a crash. It is because you think you won't, but you might crash anyway.