Looking at the Election Results on this website:
Definitely looks like this wouldn'tve helped Obama or John Gregg. Donnelly beat Moreduck by almost 150,000 votes so it wouldn't even benefit the Republicans. Congressional Results seem to verify no adverse outcome either:
http://en.wikipedia.org/wiki/Indiana%27s_8th_congressional_districtSo yes, in this case as the article says that the votes didn't seem to have that much of an effect on the race. However, it should still be alarming that votes would go undiscovered for this long. I mean, what if somebody finds those missing Nixon votes in Aurora? Our timeline could be in jeopardy!