francisco needs. >> reporter: both renault and jane kim forced an alliance asking their voters to vote for them as their first and second choices. kim has also congratulated breed. today breed will have an official celebration press conference at her alma mater, rosa marks elementary school. live in san francisco, amy hollyfield, abc 7 news. >> breed will not only make history here in san francisco, but nationally as well. when she takes office, she will become the only woman mayor among the 15 largest cities in the u.s. all mayors in those cities are men and all but three are white. >> now to contra costa county, diana beck tin is widening her lead, she stands at 50.49%. she needs a majority of votes to secure a win or else there will be a runoff election.