@boomerang,
Boomer, this happened here in southern CA - Orange county and the two candidates fought a bitter battle. When Sanchez, with Mexican background, won the election by such a small margin, her opponent Doran
alleged that illegals were voting and it launched a massive investigation where indeed it was found out that 624 votes were cast by illegals. Doran still lost by a few votes, but it became secondary to the outrage that indeed 624 illegals were able to vote.
As for ACORN, the scandal at the 2008 election also involved Obama and his relationship with ACORN. ACORN itself was not convicted but several of their people in various states were. At least 18 former workers had admitted guilt or been convicted on varying charges of election fraud. The punishment ranged from probation to a few months in prison.