Moonrise: The Next South Korean Leader and How He Will Govern

Once in office as the twelfth president of the Republic of Korea, Moon Jae-in will have his work cut out for him.

In the 2012 South Korean presidential election, Moon Jae-in lost to Park Geun-hye. Now, a snap election has Mr. Moon positioned to be the next president. With the political right in disarray due to Park’s removal from office and the splintering of the political party she once led, the stage is set for the political left to take power again in the Republic of Korea. Why this will happen and what the likely short-term results will be on the Korean peninsula?

Kim Dae-jung was the first popularly elected liberal president in South Korea, serving as president from 1998–2003. South Korean presidents can only serve one five-year term in office. President Kim was succeeded by another liberal, Roh Moo-hyun, who served as president from 2003–2008. The end of President Roh’s term gave way to a resumption of conservative rule in South Korea. The party of Park Geun-hye has controlled the governing agenda regarding domestic and foreign policy for most of the last decade. Lost in the analysis of Park’s impeachment and removal is the political change that occurred in South Korea last year. On April 13, 2016, the elections for the National Assembly resulted in a narrow victory by the liberal opposition (Democratic Party). This result defied the polling data and dealt a blow to Park’s ruling party. Another surprise was the emergence of the People’s Party, a centrist and reform-minded third party that won a surprising share of seats in the assembly. The center-left controls the National Assembly and in conjunction with votes from the now splintered conservatives, led to 78 percent of the representatives in the National Assembly voting to impeach President Park in December. Now, the Democratic Party has chosen Mr. Moon to be its standard-bearer in the May election. The People’s Party is the vehicle of Ahn Cheol-soo who briefly sought the presidency in 2012 as an independent reformer. The political right is struggling to have a candidate poll in the double-digits. In the South Korean election system, the popular vote winner obtains the only prize up for grabs. This is why the Moon versus Ahn dynamic is the only matchup worthy of discussion. The conventional wisdom and polls have Mr. Moon winning the election, which will be proven correct when the voting occurs on May 9. When he quit the 2012 race, Mr. Ahn endorsed Moon Jae-in. While there are differences—mainly in domestic policy—between the Democratic and People’s Party, they are not great enough for the political left to be fragmented at the polls. Moon Jae-in was President Roh’s chief of staff and as such is heir to an entire political movement. The party of Mr. Ahn will play an important role in the National Assembly after the presidential election, because it will be a coalition partner with the Democratic Party (the current National Assembly sits until 2020). In the short term, his political movement is not strong enough and his brand is not distinct enough from that of the Democratic Party. The headwinds of change are in the air, which is why the established leader of the strongest opposition party will win the election in May.