SUMMERVILLE — Many of the seven candidates for Dorchester School District 2 board went to bed Tuesday night not knowing how their race would turn out, but in the end the two incumbents and a retired district employee had the most votes, according to unofficial returns.

A computer glitch delayed results from being recorded at the county’s Election Commission, leaving voters in the dark about results for hours after the polls closed at 7 p.m.

“We are hearing absolutely nothing,” incumbent candidate Lisa Tupper said around 10 p.m. Tuesday. Tupper said she had hoped to watch the returns from home, but when that failed, she went to the Yes 4 Schools party seeking results.

Volunteers with the district’s Yes for Schools campaign gathered results on that vote by going to the polls, but had no information about the school board race, they said.

Dorchester County finally started reporting results around 11 p.m., and by 2:40 a.m. had all but the absentee ballots counted.

In the school board race, with 61 of 62 precincts counted, incumbents Barbara Crosby (20.6 percent) and Tupper (18.8 percent) were joined by former principal Sam Clark (16.6 percent) as the top vote-getters.

Seven candidates ran for three at-large seats on the school board. The race was nonpartisan.

Other results were: Harry Blake (14.3 percent), David DuBose (12.75 percent), Justin Farnsworth (11.8 percent), and Louis L. Smith (4.9 percent).

Long-time board member Bo Blanton did not seek re-election, citing a desire to spend more time with his family.

The individual races were overshadowed by the biggest controversy in the district, the $179.9 million bond referendum to build and renovate schools, which passed by a 60-40 percent margin.

The election winners will serve four-year terms on the seven-person board. The district encompasses schools in the lower part of the county around Summerville.

Reporter Bo Petersen contributed to this story.