An exclusive right or privilege exercised by individuals--not necessarily politicians--who have a hidden agenda.
1) I am tired of all the politicians who think it is their Barackative to bombard us with annoying tv commercials and phone calls around the mid-term election.
2) I guess it's her Barackative to wear that slinky dress to the bar, because she'll get men to buy her drinks!
3) Whatever! It's my Barackative!