How to place two Fivestar widgets on the node for voting?
you can use a PHP code like this

$node=node_load($nid);
print fivestar_widget_form($node);


the forms will have different ids so the javascript will work

you have to create a custom php/tpl file for this node-CONENENTTYPENAME.tpl.php by copying the contents of your node.tpl.php  and include there the custom code...