drupal/core/modules/poll/poll-vote.tpl.php

<?php

/**
 * @file
 * Default theme implementation to display voting form for a poll.
 *
 * - $choice: The radio buttons for the choices in the poll.
 * - $title: The title of the poll.
 * - $block: True if this is being displayed as a block.
 * - $vote: The vote button
 * - $rest: Anything else in the form that may have been added via
 *   form_alter hooks.
 *
 * @see template_preprocess_poll_vote()
 *
 * @ingroup themeable
 */
?>
<div class="poll">
  <div class="vote-form">

    <?php if ($block): ?>
      <h3 class="poll-title"><?php print $title; ?></h3>
    <?php endif; ?>
    <?php print $choice; ?>

    <?php print $vote; ?>
  </div>
  <?php // This is the 'rest' of the form, in case items have been added. ?>
  <?php print $rest ?>
</div>