None of those three cases have to do with bribery, at least not receiving bribes for official action. Here's some nuance: Kelly concerns retaliation, McDonnell concerns whether hosting meetings and events amounts to official action, and FEC concern the limit (was $250,000) on the amount of post-election contributions which may be used to repay campaign debts.

It's also worth noting that Kelly was unanimous and FEC upheld the ruling of the district court which the FEC had appealed.