The target of a misleading Facebook page during a nasty race for a Staten Island assembly seat is speaking out after NY1 revealed who is behind the account. NY1's Amanda Farinacci filed the following report.

Their battle for State Assembly is long over, but Janine Materna and Ron Castorina are still embroiled in a bitter dispute, which was made uglier this week after NY1 revealed Castorina had knowledge of a misleading Facebook page created to damage Materna's candidacy.

Now, she's calling for his resignation:

"Both as an assembly member, as well as a resignation from the Republican Party chairman, because I believe that the people of Staten Island deserve better," Materna told NY1.

During a race many have called the nastiest in recent Staten Island history, a Facebook page — parts of which are seen in the video above — emerged. It looked like something Materna's camp might have created.

But several posts on it were out of step with Materna's conservative district.

Like this one: "Mayor Bill De Blasio is right! We need a homeless shelter in Annadale!"

Another post on the page declared, "Black Lives Matter," and showed a photo of Materna with former Obama Attorney General Eric Holder. "Hon you just lost my vote!" one commenter replied.

"People would say, 'Janine, how can I vote for you? You want high density housing in Annadale? Janine, you're for homeless shelters in areas?'" Materna said.

It was a mystery who was behind the damaging page until NY1 reported that local lawyer Richard Luthmann was its administrator — and communicated with Castorina about what the page should contain.

"Richard Luthmann should be penalized through the grievance committee, as well as Ron Castorina, both who are attorneys, who are held to a higher standard," Materna said.

Castorina trounced Materna in the Republican primary, winning 68 percent of the vote.

Friday, he called her request to step down "A childish and ridiculous attempt to get more press."

The assemblyman also fired back by pointing to a Facebook page containing his likeness. He charges it was created by his opponent's camp.

But it is titled "Crooked Ron Castorina." Clearly, there was no intention to mislead voters that it was part of his campaign, unlike the page by Luthmann.

"Nobody from my campaign was in involved with that, that I'm aware of," Materna said.

Since Castorina is the head of the Staten Island Republican Committee, NY1 reached out to the state GOP Party Chairman Ed Cox. He declined to comment on this story.