RafflePress Pro makes it easy to create giveaways, contests and awards in WordPress. Grow your list of email addresses, website traffic and social media followers with viral gifts and contests.
Demo: https://rafflepress.com
TotalContest is a powerful WordPress contest plugin dedicated to running and managing contests and competitions on your website.
Demo: https://codecanyon.net/item/totalcontest-pro-responsive-wordpress-contest-plugin/19543719