(CNN) - Poll workers in Indiana and North Carolina on Tuesday reported heavy turnout for two primaries that could be pivotal in the Democratic presidential nomination battle between Sens. Hillary Clinton and Barack Obama.
Turnout in the North Carolina Democratic primary was expected to reach 50 percent, according to Gary Bartlett, executive director for the North Carolina Board of Elections.
That figure would far exceed the 15 percent to 30 percent that usually turn out for a primary, he said.
The Indiana secretary of state's office will not release turnout figures until the end of the day, but Bethany Derringer, a spokeswoman for the office, said voter turnout was high.
Polling officials in Indianapolis said that they had set a record for voter turnout after being open for only six hours.
North Carolina election officials reported a minor problem in the town of Oriental after an election official failed to show up. No voting problems were reported in Indiana.
A polling station in Raleigh, North Carolina, also saw a steady stream of voters since it opened at 6:30 a.m. Tuesday.