NPR's Larry Abramson has been tracking events at Northwestern.

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Tracking poll results reflect an overall pattern of campaign events that are unfolding day by day.

CNN: About the Tracking Polls

The last time I saw Bernie we were tracking down the injured veteran to understand his experience of the events.

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Day-by-day the tracking poll can only show temporary gains or losses attributable to temporary events.

CNN: About the Tracking Polls

But this is a smart chef, because she figured out how to use Eventbrite's tracking capability to see which sites were generating the most visitors for her events.

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To help avoid overemphasis on the horse race and focus instead on what's driving the election, the tracking poll has begun to ask a series of questions on issues and events.

CNN: About the Tracking Polls

Everbridge also has a weather tracking system, and emergency managers can use that to send out automatic notifications as different weather events approach their areas.

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