The Washington Times has some more information on Andy Vidak, the Republican who beat a Hispanic Democrat and won in a majority Hispanic district. See California Republican (in 60% Hispanic District) Wins State Senate Seat, Beats Hispanic Democrat .

According to the Times:

Fresno cherry farmer and cattle rancher Andy Vidak, who is fluent in Spanish, said he captured the state Senate seat in last week's closely watched runoff vote by connecting with Hispanic voters with a "common-sense" approach that focused on job creation, affordable energy and opposition to big government.  He even cooked menudo, a cow-stomach soup and a Mexican favorite, at a Hispanic Chamber of Commerce event at the Bakersfield fairgrounds where 10,000 Hispanics turned out.  

He got a big assist from other GOP officeholders and hundreds of Spanish-speaking Republican volunteers going door to door, making pitches in Spanish where necessary in the 60 percent Hispanic district.  Mr Vidak also managed to create a little political daylight from hard-liners in his party on the issue of eventually granting citizenship to illegal immigrants.  

"We talked to them in their homes, where they are most comfortable on the issues that matter most to them: improving the economy, lower  taxes, less government interference with small business," Republican Assemblyman Travis Allen said. [Hispanic Win: 'California can be Republican Again', By Ralph Z. Hallow, Washington Times, July 29, 2013 ]

(The person in the article who said "California can be Republican again" was Jim Brulte, former State Senate leader.)  

Candidates do what they think they must  to win, and there are local issues that may work differently in different districts.  But that part about the "political daylight" sounds suspiciously like Vidak is open to amnesty.