Doris & Frank's game Banana Republic
Very tactical bluff game that requires a good memory and features a great showdown in the end of every game.
Essentially the game is very easy, the players use money to bribe voters, the can also use killers, bodyguards and journalists. But the point is, that all actions are done by placing cards face down! And though you can have a peek at some of those cards every turn, you're forced to act with incomplete information till the end.
The game works from 2 to 5 players. It really works fine with 2 players, though it feels differently. 4 players is probably best. Half an hour playing time.