American State Governors, 1776-1976, v1, Joseph and Jessamine Kallenbach
The Democratic Party regained the governorship in 1857, having regained the legislature in 1856.
At the Democratic state convention, the anti-Broderick faction was in the majority, and they nominated Weller over Joseph McCorkle (Broderick D) by a margin of 254-61.
The Republican State convention met in Sacramento on 7/8/1857. Although the party was unsure if he would accept, Edward Stanly was nominated for governor with 163 votes to 18 scattering.
The American Party met on 7/28/1857. It nominated George W. Bowie for governor over Edward Stanly (the R nominee) after Stanly made his opposition to nativism clear.
A "Settlers and Miners" convention met in Sacramento on 8/4/1857. They sought to form a new party based on the idea that settlers on property should have some rights to the land. The convention endorsed Stanly for governor and was absorbed by the Republican Party.
On election day, turnout fell from that of the presidential election. Weller won easily, though his vote was 246 less than Buchanan's. Stanly received 345 more votes than Fremont. Bowie received 16,729 fewer votes than Fillmore. Half of Stanly's total vote came from San Francisco and Alameda.
Norman D. Brown, Edward Stanly: Whiggery's Tarheel 'Conqueror', pp. 180-193.