The first debate of the 2012 Presidential race between President Barack Obama and Governor Mitt Romney sparked some 10.3 million tweets on the evening of October 3 and became the most tweeted event in US political history, according to a report by Twitter and Compete.

The following chart tracks #Debate tweet volume at 15-minutes intervals from 9:00 pm to 10:30 pm EDT on October 3, 2012:

Below, other findings from Twitter and Compete.

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