I am all for Obama being elected. I do not see where a perfect election is possible. So the ideal is that dirty tricks on one side should be balanced out by dirty tricks on the other, and that dirty tricks be kept at a minimum.
The Republicans try their best to keep poor people from voting by challenging the voter rollsheets and screaming about fraud, and the Democrats try to register as many people as possible. Being as there is likely to be a very high percentage of Black people voting for Obama, this means that the Republicans will focus on preventing them from voting in those precincts where Black people are in a majority.
Being as more Black people have a criminal record than White people, I imagine that they will try to prevent them from voting on the grounds that they are former criminals, even though some states restore the right to vote more readily than others.
I would imagine that both sides will try to win by any means that they can. The flap over the Bill Ayers affair rather proves this. Ayers is not a danger to anyone and will not participate in Obama's government, but somehow Obama is supposed to kneel and beg forgiveness from unspecified individuals for even knowing the guy.
Of course, perhaps all the Black folks are going to be lured away by Alan Keyes' candidacy.