Syngman Rhee
On July 20, 1948, Rhee was elected president of the Republic of Korea in the South Korean presidential election, 1948 with 92.3% of the vote; the second candidate, Kim Gu, received 6.7% of the vote. On August 15, the Republic of Korea was formally established in South Korea and Rhee was inaugurated as the first President of the Republic of Korea. The next month, on September 9, the north also proclaimed statehood as the Democratic People's Republic of Korea. Rhee himself had been an independence activist, and his relations with the "chinilpa" Korean elites who had collaborated with the Japanese were, in the words of the South Korean historian Kyung Moon Hwang, often "contentious," but in the end an understanding was reached in which, in exchange for their support, Rhee would not purge the elites. In particular, the Koreans who had served in the colonial-era National Police, whom the Americans had retained after August 1945, were promised by Rhee that their jobs would not be threatened by him. Upon independence in 1948, 53% of South Korean police officers were men who had served in the National Police during the Japanese occupation.
2012 South Korean presidential election
Moon Jae-in won the nomination on the first ballot, so no run-off contest was needed.
The first member of the Saenuri Party to officially announce their candidacy was Kim Moon-soo on 22 April. Kim, a former labor activist, stated in his announcement that he would focus on combating regional and socioeconomic divides, emphasized his commitment to a policy of multiculturalism, and argued for a revision in Saenuri's primary system. He stated further that Park Geun-hye's leadership of the party represented only an "ambiguously prevailing trend", and could not be relied upon to reach victory in the elections. Although Kim said that he was "convinced" he could "attract more support than [Park]", he was not widely expected to garner a high level of support. His early announcement was regarded as an attempt to preemptively form an anti-Park faction in the party.