This Buzzfeed offering would be too bullshit even for a partisan like me, except that it happens to draw on a cultural and political divide that I'm familiar with:
I'm very ready to believe that political events with donuts are not Mitt's home territory. You see, as I've written before, at union sponsored events, you can count in the refreshments to be donuts. At non-profit and advocacy group events, look for bagels. As for other possibilities, think poverty and home-cooked food; or, with foundation funding, croissants, an ethnic banquet, or perhaps rubber chicken.
Somehow I doubt that Mitt appreciates these nuances. Evidently he had ventured among the wrong crowd.