以往研究政治景氣循環之文獻，焦點集中在經濟表現、股市漲跌和執政黨連任之關係。但是，由於選舉結果也會直接影響到一個國家的股市後勢，因此政治選舉事件的結果對市場參與者尤其重要。本研究以不確定資訊、過度反應及追漲殺跌理論，為實證發展的架構，實證研究各國股市行為對於正事件或是負事件的選舉結果如何影響股市的後勢表現。
本文以10個國家的政治選舉事件，實證正、負事件的選舉結果對股市後勢的影響，並檢視重大選舉事件對股價變化究竟符合不確定資訊、過度反應及追漲殺跌理論何種理論。研究方法為事件研究法，並同時考慮以OLS與GARCH的模型來配適分析。
實證結果發現不論以OLS或是GARCH的模型來配適分析，在建立預期報酬率模型上或有些許的差異，但最後皆能得到一致之結論。本文結論如下:
1.支持不確定資訊理論者，無。
2.支持過度反應理論者，計有台灣、法國、英國、新加坡。
3.支持追漲殺跌理論者，計有泰國。
4.皆不支持上述三種理論者，計有加拿大、西班牙、紐西蘭、德國、澳洲。

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