WASHINGTON, Nov 29 (Reuters) - The U.S. House of Representatives is expected to vote on Friday on whether to expel scandal-plagued Republican George Santos, who faces criminal corruption charges and new accusations that he misspent campaign money, according to Republican aides.

Several lawmakers have introduced motions targeting the first-term lawmaker after a report by his House colleagues suggested that federal prosecutors should bring additional charges against Santos, 35, who fabricated large aspects of his life story in his election campaign.

The motion requires a two-thirds majority in the House, which Republicans control by a narrow 222-213 majority.

If expelled, Santos would become one of the few members to be removed from the House of Representatives. The last expulsion was in 2002, when former Democratic Representative James Traficant was ousted following his conviction on corruption charges.

House Speaker Mike Johnson said party leaders will not tell rank-and-file Republicans how to vote because some believe he should not be kicked out before his criminal case is resolved. This decision has raised concerns about the integrity of the House and its ability to hold members accountable for their actions.

Johnson said earlier in the day that the vote would take place on Thursday, but Republican aides, speaking on condition of anonymity, said later it is expected for Friday.

The bipartisan Ethics Committee on Nov. 16 released a report on allegations that Santos committed campaign finance fraud. It documented a pattern of poor bookkeeping and misuse of campaign funds so pervasive that his election "has called into question the integrity of the House."

Santos, who previously pleaded not guilty to federal charges by prosecutors in New York, including laundering campaign funds and charging the credit cards of donors without permission, now faces mounting pressure from both sides of the aisle.

The Ethics Committee referred additional allegations of "uncharged and unlawful conduct" to the Justice Department for possible criminal prosecution, including evidence of false loans reported by Santos' unsuccessful 2020 congressional campaign, improper loan repayments, and "systemic reporting errors" in both his 2020 and 2022 campaigns.

The report also revealed extravagant and potentially illegal spending of campaign money by Santos, including thousands of dollars on cosmetic procedures such as Botox, luxury brands like Hermes, and purchases from the explicit content website, OnlyFans.

A previous attempt to expel Santos on November 1 failed due to Republican's need to protect their narrow House majority. However, it remains uncertain whether Santos will receive the same support a second time, as some Republicans who previously opposed expulsion have stated they would not do so again.

Santos came into the public eye when media outlets exposed his fabrication of personal and professional history, including falsely claiming employment at Goldman Sachs and Citibank, as well as a false graduation from New York University.

Santos, who has since admitted to fabricating significant portions of his resume, has not responded to the recent allegations or request for comment. His announcement that he would not seek reelection in 2024 has not alleviated calls for his immediate resignation.

The upcoming vote in the House of Representatives will determine the fate of George Santos and serve as a test for the integrity and accountability of the House.