William Lynch, a longtime former chairman of the Rhode Island Democratic Party, is considering running for the District 8 state Senate left vacant by the resignation Tuesday of James E. Doyle II, Rhode Island Public Radio has learned.

Doyle, a Democrat first elected in 2004, said he was stepping down due to a personal struggle with alcohol.

Matthew Fecteau, who came close to defeating Doyle in 2016, has already announced a campaign for the Pawtucket-based Senate seat.

Another former Doyle rival, Mark Theroux, is also expected to run. Possible candidates include Pawtucket city councilors Albert Vitali and Sandra Cano.

After a long tenure, Lynch stepped down as Democratic Party chairman in 2010 and ran unsuccessfully for a congressional seat vacated by Patrick J. Kennedy.

Like Doyle, Lynch is a son of a former Pawtucket mayor, Dennis Lynch, who went on to work for the state for many years before dying in 2007. Lynch is a lawyer with Lynch & Pine, the firm led by two former state attorneys general, his brother, Patrick Lynch, and Jeff Pine.

In recent years, Lynch has served as a special adviser for the the state Democratic Party, although he has considerably scaled back his level of activity in that role.

A special election to fill the vacant Senate seat is planned for April 3. The filing deadline ends on January 19, so prospective candidates will need to make their decisions quickly. A primary will be held on February 27.

This story has been updated.

One of the state’s top political reporters, Ian Donnis joined The Public’s Radio in 2009. Ian has reported on Rhode Island politics since 1999, arriving in the state just two weeks before the FBI...