BURLINGTON (AP) -- The prosecutor in Vermont's largest county said Tuesday he would not seek the Democratic party nomination to run for state attorney general as he did in 2012.

Chittenden County State's Attorney T.J. Donovan said he considered a rematch against incumbent Attorney General William Sorrell, but it was not the time personally or professionally.

Donovan says a lot of the issues he campaigned on two years ago have become law, such as a "good Samaritan" law that provides immunity for prosecution for someone who calls 911 to report a suspected drug overdose. And he's pleased that Gov. Peter Shumlin is fighting drug abuse by treating addiction as a public health issue rather than a law enforcement matter.

Donovan challenged Sorrell in the 2012 primary. Sorrell won by a narrow margin.

Sorrell is planning to seek re-election. He said Tuesday that not having a primary election opponent means he'll be able to focus on his job rather than politics.

Sorrell was appointed attorney general in 1997 by then-Gov. Howard Dean after Sorrell's predecessor was appointed to the state Supreme Court. Sorrell first ran for re-election in 1998 and has been re-elected every two years since. He had previously served as Chittenden County state's attorney, the same position Donovan now holds.