"Instant runoff voting" means a method of casting and tabulating votes in which (i) voters rank candidates in order of preference, (ii) tabulation proceeds in rounds such that in each round either a candidate or candidates are elected or the last-place candidate is defeated, (iii) votes for voters' next-ranked candidates are transferred from elected or defeated candidates, and (iv) tabulation ends when the number of candidates elected equals the number of offices to be filled. "Instant runoff voting" is also known as "ranked choice voting."
"Ranking" means the ordinal number assigned on a ballot by a voter to a candidate to express the voter's preference for that candidate. Ranking number one is the highest ranking, ranking number two is the next-highest ranking, and so on, consecutively, up to the number of candidates indicated on the ballot.
Va. Code § 15.2-705.1