As you can expect, there is a significant amount of political maneuvering going on, with the two candidates -- Lew Fidler and David Storobin, looking to secure rabbinical endorsement.
The Flatbush Jewish Journal, a community newspaper known for it's right-wing leanings, put a notice on the front page of the latest issue stating "It Is Prohibited To Vote for Lew Fidler."
The cover directs you to an advertisement on page 20, where a list of 42 prominent rabbis, including such names as Rabbi Chaim Yisroel Belsky, Rabbi David Cohen, Rabbi Shmuel Kaminetzky and others, state that it is forbidden to vote for Lew Fidler.
The exact wording of the advertisement states that because of Mr. Fidler's votes concerning gay marriage "It is therefore considered a Chillul HaShem and Assur [forbidden according to Torah law] to vote for or to provide funding, campaign assistance, public recognition or any type of support to Councilman Lewis Fidler. To do so would amount to being mesisy'ayah ovrei aveirah (abetting transgression of the Torah's commandments)."
The document with the original signatures can be seen here.
Pretty powerful words, if you ask me. In short, it is forbidden to do anything to help Mr. Fidler win the election according to these leading Rabbanim.
Except, perhaps, accept an advertisement in support of Mr. Fidler, because that's exactly what the Flatbush Jewish Journal did. On page 18 (which is right before the ad above), they have an advertisement listing people who support Lew Fidler.
So, what's the story here? It's forbidden to help Mr. Fidler's campaign (except, perhaps, when he pays for an advertisement?)