To answer the first question...I can guess that most of them have shitty taste in beer.
How much can you guess about people from their choice of beer? The likelihood that they'll vote, for one, and maybe even who they'll vote for.
Data from 200,000 interviews gathered by Scarborough Research, showed strong correlations between a drinker's choice of brew and his or her political participation. A few beers drew from both sides of the aisle -- Fosters, Miller High Life, Bud Light and Natural Light were all smack in the middle of the spectrum. Others were decidedly left-leaning (Corona, Budweiser Select, Stella Artois), with Heineken taking the cake as the most liberal-friendly beer. Coors Light, Miller Lite, and Labatt Blue skewed strongly Republican, with Samuel Adams on top.
As far as voter turnout, Molson drinkers had the highest voting percentage among Democrats. For Republicans, Amstel Light and Sam Adams Light were nearly even.
Interestingly, National Journal points out that Dos Equis, the brewer that fell in political hot water after one of its spokesmen, "The Most Interesting Man in the World" Jonathan Goldsmith, hosted a fundraiser for President Obama, is actually one of the most bipartisan beers.