I have this weird feeling that he is gathering info to come out swinging with rigging accusations.
Then you know nothing at all about Mitt Romney.
I am not in the Mitt fan club but no way does he accuse obama of rigging this thing, especially with republican govs / sec of state in many of the swing states.
There has definitely been more of a trend with Dems being outspoken/controversial after elections aka Jimmy Carter, Bill Clinton, Al Gore, etc.
a) Most of these exes STFU for the first few years after they left office. Hell with carter, it was not until after clinton got elected did he say much. And clinton was completely absent in W's first term.
b) it might be that other than reagan, the last few republican presidents left office and were quite unpopular. And reagan was clearly losing it before he died, so it makes sense he was quiet.