<script>
$(function() {
    if (!$('#id_is_a_poll').is('checked')) {
        $('#poll_form').hide()
    }

    $('#id_is_a_poll').click(function(el) {
        var poll_form = $('#poll_form')

        if (poll_form.is(":visible")) {
            poll_form.hide()
        } else {
            poll_form.show()
        }
    })
})
</script>