showing polls from 1 forum only

[DionDev]

im having some trouble with this

ive got polls to show on a non-vb page, and the results if the person has voted

now i just want polls from 1 specific forum (forum 4) to display on the page

this is my select statement code:

$sql = 'SELECT poll.*, thread.* FROM poll AS poll, thread AS thread
              WHERE thread.forumid = 4
              ORDER BY dateline DESC
              LIMIT 1';

which is giving me an error

im not very good a doing mysql joins/left joins right now....little help?