The answer has received 6 upvotes and 9 downvotes. Each upvote earned you 10 reputation points, which means you gained a total of 60 points. Each downvote cost you 2 points, which means you lost a total of 18 points.
60 - 18 = 42
Don't roll back bumping edits. Mod flag
Edits like that should be mod flagged so a moderator can review them. Normally I would wait until a pattern has emerged, but the user is transparent about why they are doing it. Bumping is not allowed (it's more common to post a NAA but edits do the same thing)
Looking at the politics.SE stats, the site isn't doing so well on "questions per day", so incentivizing asking questions seems like a good thing.
That doesn't necessarily mean that it will help us get out of beta status, but I think more high quality questions can help the community in general.
The "answer ratio" is also not that great here, and more ...
It's not just a matter of the rep differential between upvotes and downvotes. Poor-quality answers that agree with the biases of a significant percentage of people often receive highly positive scores.
This is a well-known and long-standing problem with the Hot Network Questions list. Sites that have controversial topics (such as Politics, Skeptics, etc.) ...
There's a daily rep cap of 200 per day. The only ways to go above it are to get the +15 bonus that comes when your answer is accepted or when you receive bounties.
If the user downvoted an answer at some point during the day, there will be a point at which they'll be sitting at 199 rep for the day, hence the +1 for an upvote.
I don't think we need to make more of it than it actually is. Editing itself is not something to be discouraged, unless it's excessive.
If you think there's abuse, flag it for mod attention and explain. The mods can keep track of what's going on even if things are deleted and without accusing people in the open when it's just an accusation. Note that abuse ...
Let me cold-shower you by saying that any changes to the reputation system are highly unlikely to take Politics.SE into account. The MSO rules boffins that may have some pull with the company/staff generally don't come from this site or care much about it.
As far as I know it's not possible to make local changes to such rules, and they probably don't see a ...
The +4 relates to the total amount of rep points obtained, not the number of votes; upvotes add 10 points while downvotes subtract 2. 10-3*2 = 4
Note that the Reputation box in the profile summary only shows recent reputation events - see this related meta post - not overall totals of reputation gained from a post. You can see the full breakdowns here.
As long as politics stackexchange does not stand on its own, I'd argue that the (potential) benefit of using the same rules as the main site outweighs the (potential) drawbacks of using +10/+10.
This argument of mine becomes irrelevant if/when the bulk of new politics users come here from other sources than hot network questions.
Amusingly one of my first contributions to an Electronics SE question resulted in the mods locking down my answer because they thought I was editing it to bump it to the main page (which I had no idea how it worked at the time). So yeah, mods can do that. Whether it's always the appropriate thing to do... it depends, I suppose.
A site dies without a continuous supply of quality and on-topic questions. Anything that could be seen as suggesting "we are twice as important/valuable as you are" might feel discouraging to those who mostly ask questions, and generate a subconscious less-than-optimal attitude in those who mostly post answers.
Yin-Yang, chicken-and-egg, questions and ...