On December 19, 2012, South Korean voters elected Park Geun-hye of the ruling Saenuri party to a five-year term as president, defeating Democratic United Party nominee Moon Jae-In. Park defeated Moon by a narrow 51.6% to 48.0%. Moon Jae-in won the southwestern Jeolla region by over 70 percentage points and a smaller margin in the capital city of Seoul, but these crushing margins were not enough to overcome Saenuri margins in the rest of the country.
Below is an interactive map I prepared showing province-level returns and margins. Mouseover a province on the map to highlight its position in the chart, or click a row in the data table to select its corresponding province on the map. The data table is also sortable.