Another data point to add to the cluster of post-convention polls: Gallup gives President Obama a three-point convention bounce and a six-point lead over Mitt Romney in a survey of registered voters.

Obama and Romney were deadlocked at 47 percent to 46 percent in Gallup's last poll before the convention; Obama now leads 50 percent to Romney's 44 percent. Obama's approval rating has also increased from 45 percent to 50 percent.