Two popular politicians : Riddle ♥

Two popular politicians : 

Tom and Jerry, two popular politicians, met at a club to discuss the overthrow of their party leader. They each ordered vodka on the rocks. Jerry downed his and ordered another. He then drank his second in a gulp and decided to wait before he ordered a third. Meanwhile, Tom, who was sipping his drink, suddenly fell forward dead. Both men were setup for an assassination. Why did Tom die and Jerry live?

Solution to Two popular politicians : 

Both Tom and Jerry were given drinks with poisoned ice cubes. Jerry drank his drinks so quickly that the ice didn't have time to melt and release the poison.