(a) Principal Campaign Committee. Within 15 days after becoming a candidate under 11 CFR 100.3, each candidate, other than a nominee for the office of Vice President, shall designate in writing, a principal campaign committee in accordance with 11 CFR 102.12. A candidate shall designate his or her principal campaign committee by filing a Statement of Candidacy on FEC Form 2, or, if the candidate is not required to file electronically under 11 CFR 104.18, by filing a letter containing the same information (that is, the individual's name and address, party affiliation, and office sought, the District and State in which Federal office is sought, and the name and address of his or her principal campaign committee at the place of filing specified at 11 CFR part 105). Each principal campaign committee shall register, designate a depository, and report in accordance with 11 CFR parts 102, 103, and 104.