House of Delegates Speaker Casper Taylor, D-Allegany, also reassigned Poole from his seat in the House Commerce and Government Matters Committee to the Ways and Means Committee, which deals primarily with state taxes.
"Delegate Poole is a well-respected legislator in Annapolis and around the state. He is seasoned and balanced and I am confident that he will hit the ground running in his new roles," Taylor said in a written statement.
Poole's appointment to Ways and Means gives Washington County four lawmakers on powerful legislative committees that deal primarily with taxes and spending.
Del. Bob McKee, R-Washington, is a member of Ways and Means, Del. Sue Hecht, D-Frederick/Washington, is a member of the House Appropriations Committee, and Sen. Don Munson, R-Washington, is a member of the Senate Budget and Taxation Committee.
The combination bodes well for the county's efforts to lure state money for schools, roads and other projects, Poole said.
"In trying to get our share of dollars, this puts us in very good shape," he said.
The Ways and Means post will be Poole's fourth committee assignment in the House of Delegates since he took office in 1987. He served as majority leader from 1991 to 1994.
Chairing the joint committee can have a local impact, particularly for those residents who are concerned the state is not spending its money wisely, Poole said.
"Hopefully, it can make the spenders of our money more accountable," he said.
Earlier this year, Poole sought a judgeship on the county's Circuit Court bench, but a local judicial selection committee did not nominate him for the post.
Poole said he questioned whether to run for re-election, but then spoke to many residents in his district this fall who urged him to stay in the legislature.
He said he also wants to return to continue work on ongoing issues in the county, such as Civil War tourism development, farmland preservation and economic development.