"We will seek to vote on the impeachment motion as early as Dec. 2, and no later than Dec. 9," Woo said, as quoted by the Yonhap news agency.
He added that The Minjoo would focus solely on the president’s impeachment and would not demand resignation of the country’s prime minister.
The Minjoo will need 200 out of 300 votes of lawmakers in order to oust the president, which means that votes of at least 28 members of the ruling Saenuri party are needed.
On November 20, prosecutors filed formal charges against Choi Soon-sil — a friend of the president, implicated in a corruption scandal, and two of Park's former aides. The Seoul Central District Prosecutor's Office stated that Park was suspected of being an accomplice in the conspiracy, and although they cannot indict the president because of her immunity, they would continue the investigation.
On October 24, the JTBC television network reported that Choi allegedly received drafts of the president’s speeches before they were publicly delivered, though she had never held a public post. The following day, Park officially admitted asking Choi for advice on speeches and public relations issues, and apologized for "causing public concern." Choi is also accused of using her ties with Park to extract millions of dollars in donations from big companies into two non-profit foundations she controlled.