Tweets peaked Tuesday as Michelle recounted Obama's concern

Michelle Obama drove the conversation surrounding the Democratic convention on Tuesday night, according to tweets-per-minute data supplied by Twitter.

The microblogging company noted three significant spikes last night, all of them as Michelle Obama touted her husband's desire to help others. The first came at 10:53 p.m., with 18,669 tweets posted as the First Lady discussed how she and President Obama were raised, saying "we learned about dignity and decency—that how hard you work matters more than how much you make. That helping others means more than just getting ahead yourself."

The next peak came two minutes later at 10:55 p.m. when Michelle Obama said "Barack knows the American Dream because he's lived it  and he wants everyone in this country to have that same opportunity." In that minute, 21,577 tweets were posted with the #DNC2012 hashtag.

The final peak came when the First Lady recalled a few personal moments in which she said she saw firsthand the president's concern for the American people. "We've got to keep working to fix this, we've got so much more to do," she recalled the president telling her. The comment was followed by chants of "four more years" from the crowd. During that minute, at 10:57 p.m., 22,004 tweets were posted with the hashtag #DNC2012.

Among National Journal's Politerati, peaks among both Democrats and Republicans were spread out throughout the night, though there was a higher concentration of spikes during Michelle Obama's speech. 

A separate academic analysis showed that the First Lady's speech was written at a 12th-grade level, the highest in history among the wives of presidential nominees. A similar speech from Mitt Romney's wife, Ann, last week was rated as being written at a 5th-grade level, the lowest in history.