You have had many posts downvoted in a short span of time today. Assuming these votes were all cast by the same user, they will be reverted automatically. Since this is done by a nightly job, wait 24 hours. If the votes are still there after more than 24 hours, use the contact form and explain the issue (moderators don't know who voted for what, but some Stack Exchange staff do, so you might as well contact them directly).
For more information about serial voting, see What is serial voting and how does it affect me? on the main meta site.
This won't affect your ability to vote in the CSTheory elections. You didn't have 150 reputation there in the first place, so you wouldn't have been able to vote anyway.
You tend to ask a lot of questions that are unclear, that are long, imprecise attempts at a proof, or that denote a lack of knowledge of the field you are trying to find new results in. All of these are legitimate reasons for downvotes. It is doubtful that these votes are related to the ongoing election, especially since they wouldn't influence it in any way. Nonetheless, going through a user's profile and downvoting many of their posts is not appropriate behavior, even if you genuinely think each post deserves a downvote — the only rule about voting is that you must not target a user. This goes equally for upvotes. This is why serial downvoting is automatically reversed.