It IS possible to send an email with data from a database. It's not possible to have an email sent eyery hour with PHP, except with crontab or alike. Why would you want to do that anyway? I'd have an email sent everytime someone answers the poll.
Sending Email:
$query = "SELECT field1, field2, field3, field4 FROM polltable WHERE id ='$your_id'";
$result = mysql_result($query);
$array = mysql_fetch_array($result);
$mail_text = "Field 1: $array[field1]\nField 2: $array[field2]\nField 3: $array[field3]\nField 4: $array[field4]\n";
mail("your@mail.com","Subject",$mail_text);