As a as choices go, Ryan probably IS the safest choice for Romney to not antagonize the various sub-sets of Republican wing-nuts. He speaks well, even when his "budget plan" is roundly criticized by everyone who comprehends what it implies. (He won't blunder like Palin)

Democrats are already planning to clarify what Ryan would do to Medicare.

I'm sure Romney will get a short 'bump' in the polls for awhile... but I do look forward to the time when BOTH Ryan & Romney have to be seen on the same stage with Obama & Biden, instead of just Fox News.