The polling tool iClicker Cloud is integrated with your iClicker. Provided that you have added your iClicker course to your eClass course, you can then sync the iClicker scores to the eClass gradebook. Both students and instructors will see the accumulated scores under the iClicker column in the eClass gradebook.
Once you have completed a polling session and graded the results, you will have to sync the updated scores. Follow the instructions on how to Sync Grades from iClicker to eClass.