Theirs been a lot of speculation about what might inside them. Some people have suggested:
-that he's wealthier then he claims to be
-proof that he was working for Bain for longer then he claimed
-Evidence of offshoring and other tax evasion
-In substantial debt
-Failure to donate the expected tithe to his church
-having(legally) paid relatively little in taxes thanks to loopholes
(no doubt their are other possibilities, though none come to my mind)
So which potential contents would you rank as:
a)easy to brush off
b)likely to make a dent in Rom's election performance
c)almost certainly fatal to Rom's election chances
?
Being wealthier than he claims to be would be washed out of the public consciousness after 2-3 news cycles, and wouldn't have a major impact on the campaign.
The most damaging in the eyes of swing voters would probably be the low taxes due to loopholes, though this would be balanced somewhat by making him more popular with the Tea Party crowd.
The failure to pay Tithes to his Church could end up being a big issue, especially if one of those nasty chain emails gets started about it.
Any proof that he lied or misled about how long he worked at Bain or what he did there could be devastating to his campaign.