Thornsbury recently pleaded guilty to federal charges outlined in an information related to his role in the conspiracy and resigned his post. Baisden also pleaded guilty to a federal charge of attempted extortion and stepped down this week from the Mingo County Commission.
The Office of Disciplinary Counsel immediately started investigating Sparks after federal prosecutors alleged he might have known about a different set of allegations against Thornsbury.
Thornsbury was accused of repeatedly trying to frame the husband of an ex-lover. Goodwin's office plans to drop the charges once Thornsbury pleads to the other charges, but a civil lawsuit is ongoing.
The Office of Disciplinary Counsel is seeking to have Sparks' law license suspended. In a recent filing with the state Supreme Court, the disciplinary office claims to have sworn statements where the prosecutor admits knowledge of and participation in the conspiracy.
Sparks is pleading guilty to a misdemeanor charge in connection with the accusations, Varney said. As a part of his plea agreement Sparks must resign his office and surrender his law license. Sparks can seek to have his license reinstated after 5 years, Varney said.
He faces a maximum of one year in prison and a $100,000 fine, Varney said. Toler also faces up to five years in prison.
"We've secured two more cooperating individuals, and we're going to follow the evidence wherever it leads us," Goodwin said.
He is not allowed by law to say if any further indictments are in the works.
A message left with Toler's attorney was not immediately returned.
In an interview with the Williamson Daily News, Toler said he was stepping down to focus on his family.
"The safety and well-being of my family is the most important thing to me," Toler reportedly said. "My position as magistrate takes a second seat to them and I feel the time has come to resign and concentrate on my family and remove this stress from their lives."
The information against Toler does not identify the person he allegedly registered to vote.
A magistrate presides over civil cases involving less than $5,000, as well as misdemeanor criminal cases.
Typically when a magistrate resigns the chief judge in that particular circuit appoints a replacement, said Supreme Court Administrator Steve Canterbury. Although he was suspended, Thornsbury was still the only circuit judge for Mingo County until he resigned last week.
The Supreme Court appointed Senior Status judges John Cummings and Thomas McHugh to handle Thornsbury's caseload. The court is still researching who is in charge of appointing a new magistrate, spokeswoman Jennifer Bundy said.
Mingo County Commissioner Greg "Hootie" Smith said he expects the commission to meet today in an emergency session to appoint a temporary replacement for Sparks. It met in an emergency session Wednesday to accept Baisden's resignation. The commission is accepting applications for a new commissioner until Nov. 1, Smith said.
Toler, Sparks, Thornsbury, Baisden, Crum and others are members of the same Democratic political faction in Mingo County, commonly known as Team Mingo.
Days before the primary election, members of Team Mingo and the other main Democratic faction accused each other of wrongdoing. Judy Harvey, a deputy county clerk and wife of Toler's challenger, told the Daily Mail she felt intimidated by Toler during a recent encounter.
Toler -- who told the Daily Mail at the time he is 6 foot 4 inches tall and 300 pounds -- denied the allegations.
"Politics is a contact sport in Mingo County," Sparks told the Daily Mail at the time.
In his letter, Sparks said it was an honor to serve as prosecutor. He also pointed to his voluntary cooperation in the Thornsbury investigation, and other accomplishments of his office.Check back in with dailymail.com throughout the day for updates as more information becomes available.