Still, things were at least not getting worse for Mr. Obama in the tracking polls.
His substitution suggested the possibility that in the tracking down of terrorism the sacrifice of liberty might be tolerated.
The Marines flew helicopter missions to assist in the tracking of drug planes and boats and conducting training exercises.
But he lost ground in the tracking polls published by Rasmussen Reports and in an online survey by Ipsos.
No one has ever used the Steadicam as perfectly as he did in the tracking shots behind Danny Torrance's tricycle.
On Sunday, Mr. Obama further expanded his lead in the tracking polls run by Gallup, Rasmussen and the RAND Corporation.
Obama's performance Tuesday night will do wonders for Democratic morale, but we may not see much shift in the tracking poll numbers.
You can see that in the national poll averages and, especially, in the tracking polls, which try to capture day-to-day movements.
Investors in the tracking stock would not, however, own a share of the subsidiary, as they would with a conventional stock; Sony will continue to own the business.
Perhaps of more concern to the Democratic campaign is what's been happening in the tracking polls, which survey people every day.
In the tracking phase, we distribute particles for persons initially detected.
