A New Hampshire Democrat who joked about Sarah Palin's death has resigned from the state's House of Representatives and ended his campaign for reelection, he announced today in a public letter to the House Speaker apologizing for bringing "this House into disrepute."Rep. Timothy Horrigan had speculated yesterday on Facebook that a slain Palin would become a martyr."I don't wish Sarah Palin dead ... but not merely for compassionate reasons. I also want her to live because a living Sarah Palin is less dangerous than a dead one."a dead Palin is more dangerous than a live one," he wrote.(Horrigan is not to be...