using CMS.Polls;

using CMS.SettingsProvider;

using CMS.DataEngine;

using CMS.GlobalHelper;

...

       string pollName = "testingpoll"; // Poll code name

       // Get poll info for the specified code name

       PollInfo pollObj = PollInfoProvider.GetPollInfo(pollName);

       if (pollObj != null)

       {

           // Get all answers of the poll

           DataSet ds = PollAnswerInfoProvider.GetAnswers(pollObj.PollID);

           if (!DataHelper.DataSourceIsEmpty(ds))

           {

               // Get first pollanswerinfo object

               PollAnswerInfo pollAnswerObj = new PollAnswerInfo(ds.Tables[0].Rows[0]);

               if (pollAnswerObj != null)

               {

                   // Increment votes by 1

                   pollAnswerObj.AnswerCount++;

                   // Save the data

                   PollAnswerInfoProvider.SetPollAnswerInfo(pollAnswerObj);

               }

           }

       }