Here is what we know about the election in South Korea, where voters were choosing a successor to former President Park Geun-hye, forced from office in a corruption scandal. Polls closed at 8 p.m. Tuesday local time (7 a.m. Eastern time).

■ Moon Jae-in, the candidate who favors dialogue with North Korea and was leading in the vote-counting by a comfortable margin three hours after polls closed, declared victory in a nationally televised speech. “I will be a president for all the people,” he said, vowing to work together with his political rivals.

■ With 60 percent of the vote counted, Mr. Moon was in first place with 39.6 percent of the vote. Hong Joon-pyo, a conservative who wants to keep a tough stance against North Korea, had 26.2 percent. Ahn Cheol-soo, a centrist, had 21.3 percent.

■ Mr. Hong said he was “accepting the election results” and would focus on rebuilding his party, in what the South Korean news media interpreted to be a concession to Mr. Moon. Mr. Ahn similarly said he was also “humbly accepting” the results, adding that he had failed to live up to his supporters’ expectations. Neither candidate explicitly conceded.