Last night’s town hall debate saw the two Presidential candidates go at it for a little over an hour and a half on topics both foreign and domestic (mostly domestic). We’ve already told you how the Twittersphere reacted to one particular moment involving binders full of women, and now we have the official tweets statistics from Twitter themselves.

According to the social media site, 7.2 million tweets concerning the debate were sent last night during its 90-minute duration. For comparison, last week’s Vice Presidential debate saw 3.5 million tweets and the first presidential debate saw over 10 million total tweets.

Out of those tweets, most of them were about the economy (28%). 17% were about taxes and 16% were about foreign policy. At last week’s VP debate, foreign policy won the night with 26% of the total tweets.

If you think Romney’s “binders” remark or one of various sparring matches between the candidates would have been the most-tweeted-about moment of the night, you’re wrong. Romney’s response to an audience member’s question on immigration actually won the night with 109,560 tweets per minute (TPM). Obama telling Romney that he’s “the last person to get tough on China” came in a close second with 108,619 TPM. Finally, Romney’s discussion on tax rates received 107,386 TPM.

If you missed last night’s town hall debate, you can watch it in its entirety below: