WASHINGTON — House Republicans voted Wednesday to hold a former Internal Revenue Service official in contempt of Congress for refusing to testify at a pair of committee hearings about her role in the agency’s tea party controversy.

The House also passed a nonbinding resolution calling on the Justice Department to appoint a special counsel to investigate the IRS.

Lois Lerner directed the IRS division that processes applications for tax-exempt status. A year ago this week, Lerner publicly disclosed that agents had improperly singled out tea party applications for extra, sometimes burdensome scrutiny.

An inspector general’s report blamed poor management but found no evidence of a political conspiracy. Many Republicans in Congress claim otherwise.

“Who’s been fired over the targeting of conservative groups by the IRS? No one that I’m aware of,” House Speaker John Boehner, R-Ohio, said Wednesday.

House Democrats said Wednesday’s voting was little more than an election-year ploy to fire up the Republican base.

“Welcome to witch hunt week,” said Rep. Jim McGovern, D-Mass.

The vote to hold Lerner in contempt of Congress was 231 to 187, with all Republicans voting in favor and all but a few Democrats voting against.

Lerner invoked her Fifth Amendment right not to answer questions at a pair of hearings by the Oversight Committee. House Republicans say she waived her constitutional right by making an opening statement in which she proclaimed her innocence.

The matter now goes to Ronald Machen, the U.S. attorney for the District of Columbia. Federal law says Machen has a “duty” to bring the matter before a grand jury. But a report by the nonpartisan Congressional Research Service said it was unclear whether the duty is mandatory or discretionary. Machen was appointed to his job by President Barack Obama.