 Most of the money raised in Ohio by both major party candidates came from a single zip code in downtown Columbus, which is home to their respective parties, labor and political groups, lobbyists and lawyers.A significant amount of money was spent by private groups on behalf of the candidates as well, the estimated combined total at the time of the May 2 primary was $50 million.Since the first polls on the general election matchup were taken in November 2005, Strickland led Blackwell, though the margin substantially increased in March 2006.