25 Pa. Stat. § 3168
In the case of a tie vote not otherwise provided for by law, the candidates receiving the tie vote shall cast lots before the county board or the Secretary of the Commonwealth, as the case may be, at 12 o'clock noon on the third Friday after the election, and the one to whom the lot shall fall shall be declared elected. In any case where the fact of a tie vote is not authoritatively determined until after the third Wednesday after the election, the time for casting lots shall be 12 o'clock noon of the second day after the fact of such tie vote is authoritatively determined. If any candidate or candidates receiving a tie vote, fail to appear before twelve o'clock noon of said day, the county board or the Secretary of the Commonwealth, as the case may be, shall cast lots for him or them. For the purpose of casting lots any candidate may appear in person, or by proxy duly appointed in writing.
25 P.S.§ 3168