Romney still trailing in positive Twitter buzz

President Obama enters the week with consistent support on Twitter, according to the microblogging site's tool to track sentiment for the presidential candidates. 

Obama's positive buzz has only increased since July 22, but Mitt Romney's positive tweets have stayed in the 20s except on Saturday, when the presumptive GOP nominee might have received a slight bump from the endorsement of Hollywood icon Clint Eastwood.

That endorsement happened late on Friday, and became a trending topic on Twitter.

But the bump for Romney didn't last. According to Twitter, he hit 39 on the Political Index Saturday but fell to 27 on Sunday. This means that tweets containing Romney's name or account name were rated more positive, on average, than 27 percent of all other tweets sent on Sunday.

Obama remained steady at 74 (out of 100) all weekend, and has led in positive buzz online since Twitter announced its daily tracking index last Wednesday.

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