Poor academic performance in a course(s) is not grounds for late withdrawal. The committee is reluctant to grant selective withdrawals, especially when it is clear that the withdrawal is only requested for courses with poor grades. Late withdrawal circumstances typically refer to unforeseen circumstances, with a clear rationale as to why you were unable to withdraw prior to the University-established deadline.
Successful late withdrawal petitions often include relevant medical, legal, or other documentation, if you are willing and able to provide such materials. Any supplemental materials should be submitted directly to the Arts and Sciences Student Services Center or your academic advisor.