Analyzing Public Opinion and Emotions Using Tweets and Online-Comments toward Candidates in 2017 South Korean Presidential Election
- 한국학술연구원
- Korea Observer
- Vol 50, No 4
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2019.12647 - 668 (22 pages)
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DOI : 10.29152/KOIKS.2019.50.4.647
- 178

The 2017 Korean presidential election was different from previous presidential elections for two reasons: First, it was a by-election due to the unprecedented impeachment of the president Park Geun-hye, and second, more than three candidates from multiple parties competed in the election. Since Moon Jae-in was predicted to easily win, the fight for the second place - between Hong Joon-pyo and Ahn Cheol-soo - was very competitive. In order to understand the electoral dynamics, we collect and analyze tweets and online-comments toward major candidates with logic of granger causality. We find that public sentiment toward Ahn does Granger-cause changes in online sentiment toward other candidates both from major and minor parties. This result shows that Ahn played a pivotal role in the 2017 presidential election, and implies that Koreans are eager to have alternative forces.
I. Introduction
Ⅱ. Public Opinion and Social Media
Ⅲ. Backgrounds
Ⅳ. Empirical Strategy: Data and Methods
Ⅴ. Analysi
Ⅵ. Conclusions
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