1 Exhibit 23(b) Consent of Independent Auditors We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the State Auto Insurance Companies Capital Accumulation Plan of our report dated February 18, 2000, with respect to the consolidated financial statements and schedules of State Auto Financial Corporation included in its Annual Report (Form 10-K) for the year ended December 31, 1999, filed with the Securities and Exchange Commission. /s/ Ernst & Young LLP Ernst & Young LLP Columbus, Ohio February 26, 2001