Currently that is not possible to display expired date but we will consider to add this expired date from the polls card preview in next version.

I actually managed to make it work by adding the following code at line 28 of this file:

.../components/com_easysocial/themes/wireframe/polls/default/items.php

<div class="es-card__meta">

					    <i class="fa fa-clock"></i> 

			<?php echo JText::sprintf('COM_EASYSOCIAL_POLLS_WILL_EXPIRE', $poll->getExpiryDate()->format(JText::_('DATE_FORMAT_LC1'))); ?>

		            </div>	

Right after:

<div class="es-card__meta">

						<?php echo JText::sprintf('COM_EASYSOCIAL_POLLS_CREATED_BY', $this->html('html.' . $poll->getAuthor()->getType(), $poll->getAuthor()));?>

					</div>

I also added a cute clock by adding:

<i class="fa fa-clock"></i> 

After:

<?php if ($poll->hasExpirationDate() && !$expired) { ?>

		<div class="t-fs--sm">

on the file:
.../components/com_easysocial/themes/wireframe/polls/item/default.php

Thanks for getting back to us you found the solution to show expired date into polls listing page on your site.

Just for your information, I have locked and marked this thread as resolved to avoid confusions in the future. Please start a new thread if you have any other issue in the future so it will be easier for us to manage your inquiries.

Thanks for understanding.