This blog post: New Question Asker Features, explain that system will highlight comment responses from the user who asked the question. YES, it is currently working fine in all sites. So, I presume this system also works in Stack Overflow election page i.e. the system should highlight the comment from the candidate.
Unfortunately, the system looks buggy in election page of Stack Overflow and Role-Playing-Games SE.
When you load the page for the first time, the candidate comments weren't highligted.
But if you click the Show xx more comments, the system magically highlight the candidate comments.
Reproduced in Firefox 37.01 and Chrome 41.0.2272.118 of Windows 7.
