CNN

(CNN) – Voting machine problems and some delays are reported in Lake County, Indiana, just across the state line from Chicago.

Damian Rico, communications director for the city of East Chicago, Indiana, said at one precinct in Riley Park, two machines were down for about 15 minutes when the polling place opened. Both machines are up and running now.

County election director Sally La Sota was not aware of any major problems, other than long lines.

The county is expected to vote heavily for Democrat Barack Obama. There is a significant black population and the county is just southeast of Obama's hometown of Chicago. According to the U.S. Census Bureau, Lake County has a 26% black population, 13.9% Hispanic population.

Statewide, officials say there are no significant problems. Jim Gavin, communications director for the Indiana Secretary of State, said there were long lines statewide but no issues that he was aware of.

Paper ballots will be used until machines in Fairfax County are fixed.

Fairfax County, Virginia (CNN) - General Registrar Rokey Suleman said a handful of memory cards did not work when machines were started this morning. He tells CNN that new memory cards have already been sent out to those precincts with problems. He said a "very, very small number of machines" were affected, and voters at those locations could use paper ballots instead until the problem was corrected.

Suleman said there are long lines everywhere. He added they expected that and are prepared for that. The 228 precincts in the county use both optical scan and electronic voting machines.

People started lining up to vote at 4:30am. The polls opened at 6am.