Only marginally. Imagine the 'bot' was essentially a macro that would load the poll and 'click' the mouse at specific coordinates on the screen where the skater(s) image are located, then close the page, and reload again to repeat.
Since the poll is still just one page, with both the skater's image to click and a field that will accept any string that
looks like a valid email address, all one would need to do is incorporate an auto-fill for the email field within the same macro along with the mouse coordinate clicks to vote.
No need to create real email addresses, just use a
random email generator like this one.
Still would've been better off starting from scratch and using a captcha.