Only the administrator can view the names and votes of a hidden poll.
With Doodle account:
If you are a Doodle account user and you are currently logged into your account, the results of your hidden poll will automatically be shown to you. Simply open your poll from your dashboard.
Without Doodle account:
If you created the hidden poll without a Doodle account, you need to click on the admin link in the email you got after creating the poll. If you lost the admin link, you can have the email resent here.
A hidden poll can be opened up to the participants. Open a poll using the admin link or from your dashboard. Click "more" and the "edit". In step 3, uncheck the hidden setting. Go through the remaining steps to save the changes you made.