Mitt Romney leads Barack Obama 49 percent to 47 percent in Thursday's edition of Republican-leaning Rasmussen's national tracking poll. It's the fourth consecutive day that Rasmussen has shown the GOP nominee up by such a margin.

The latest tracking poll was conducted Oct. 29-31 using automated interviews with 1,500 likely voters nationwide. It has a margin of error of 3 percentage points.

The PollTracker Average currently shows Obama leading by a little more than a point.