People faint at Obama events all the time? You never hear of them fainting at Tea Party events. Why? Fainting is for the weak. Fainting is for the feeble.
There is only one exception where collapsing in a heap isn’t “weak”. Whenever you witness your family being killed.
Of course, you’re then obligated to don a disguise and fight crime afterwards. And apart from that trauma, nothing justifies a fainting man. Nor a woman, for ladies claiming equality.
Sure, I believe that Obama supporters faint all the time. I’m sure they they also swoon and flutter and get the vapors. Because I know they’re tizzied and whiny and snitty and snotty and hissy fitty. Fainting is only to be expected.
So congratulations, Barack! Your worshippers will be terrifying warriors when push finally comes to shove.
World's Only Rational Man 
Of course, it might also have something to do with jamming people into small spaces like sheep in a stockyard and expecting them to *stand* for long periods of time while waiting for the photo op with the Prez, not to mention the general suggestibility of the people willing to do that in the first place. (After all, he’s a *rock star* and don’t fans *faint* around them?)
Tea Partiers tend to bring their own chairs, which probably prevents such occurrences, too. They tend to be sensible folks, not fans and/or fanatics.