// delete vote will reorder page for each deleted vote choice, and display page again.
public ActionResult DeleteUserVote(int choiceItemId, int pollId)
{
var currentUser = _orchardServices.WorkContext.CurrentUser;
string user = currentUser == null ? "Anonymous" : currentUser.UserName;
var choice = _pollService.GetChoices(pollId).Where(c => c.Id == choiceItemId).FirstOrDefault();
_votingService.DeleteUserVote(choice, user);
return(RedirectToAction("GetPoll", new { pollId = pollId }));
}