$todos=mysql_query("SELECT * FROM vota_si GROUP BY grupo", $link);
while($doc_1=mysql_fetch_array($todos)){// while 1 ?>
echo $doc_1['grupo']; $reg=mysql_query("SELECT * FROM vota_si WHERE grupo='".$doc_1['grupo']."'", $link); ?>
while($tit=mysql_fetch_array($reg)){// while 2 ?>
}?>
}?>