I don't want to be like the little kid that got beat up at school and runs home crying to mommy, but I just got tactically downvoted in a question. Someone else posted a virtually identical answer to mine, after I posted mine, and both of us quickly got 1 upvote. He then downvoted me, got a few more upvotes, and removed the downvote when he got "ahead," mostly taking advantage of the fact most people vote for the top correct answer and then move on.
It has been discussed at some points why tactical downvoting is bad/wrong/etc, but it's obviously impossible to really detect for regular users because of voting being anonymous. The only reason I was able to "catch" the offender this time is because I happened to take a look at his reputation after I got the downvote and I noted that it was 3170. I then refreshed the page (looking for any vote changing, mostly) and my downvote was gone and his reputation had switched to 3171.
The question I am referring to is here.
So, is this something I just need to suck up and move on, or are there voting records that can confirm this and perhaps take some kind of action to prevent it from happening in the future?