; and (C) the candidate may not be certified as a participating candidate under this title with respect to the next election cycle. (4) Prohibiting participation in future elections for candidates with multiple revocations If the Commission revokes the certification of an individual as a participating candidate under this title 3 times, the individual may not be certified as a participating candidate under this title with respect to any subsequent election. (c) Voluntary withdrawal from participating during qualifying period At any time during the Clean Money qualifying period described in section 511(c), a candidate may withdraw from participation in the program under this title by submitting to the Commission a statement of withdrawal (without regard to whether or not the Commission has certified the candidate as a participating candidate under this title as of the time the candidate submits such statement), so long as the candidate has not received a political advertising voucher under section 501 or a payment under section 503. (d) Participating Candidate defined In this title, a participating candidate means a candidate for the office of Senator or Representative in, or Delegate or Resident Commissioner to, the Congress who is certified under this section as eligible to receive benefits under this title. C Requirements for Candidates Certified as Participating Candidates 521. Contribution and expenditure requirements (a) Permitted sources of contributions and expenditures Except as provided in subsection (c), a participating candidate with respect to a general election shall, with respect to that election and any subsequent runoff election in that election cycle for the office involved, accept no contributions from any source and make no expenditures from any amounts, other than the following: (1) Qualified small dollar contributions. (2) Political advertising vouchers and payments to defray the costs of postage under this title. (3) Contributions from political committees established and maintained by a