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Social media services have become increasingly popular and their penetration is worldwide. Micro-blogging services, such as Twitter, allow users to express themselves, share their emotions and discuss their daily life affairs in real-time, covering a variety of different points of view and opinions, including political and event-related topics such as immigration, economic issues, tax policy or election campaigns. On the other hand, traditional methods tracking public opinion still heavily rely upon opinion polls, which are usually limited to small sample sizes and can incur in significant costs in terms of time and money. In this paper, we leverage state-of-the-art techniques of sentiment analysis for real-time political emotion tracking. In particular, we analyze mentions of personal names of 18 presidents in Latin America, and measure each political figure's effect in the emotions reflected on the social web.