Depending on how many Latinos turn out in the district:
48% - Jim Costa (D)
46% - Andy Vidak (R)
Here are several ways to look at the contest.
* If Hispanics make up 30% of voters on Election Day, Costa and Vidak finish effectively even, Costa 48%, Vidak 46%, within the survey's theoretical margin of sampling error. At this hour, Republicans are, subject to change as the campaign unfolds, within reach of a take-way. If Hispanic turnout is 30% or less on election day, other turnout issues, such as the number of males vs females, could potentially come into play and help decide the contest.
* If Hispanics make up 35% of voters on Election Day, Costa is better positioned to hold the seat for the Democrats: he would lead today by approximately 7 points, 50% to 43% in a hypothetical analysis conducted by SurveyUSA.
* If Hispanics make up 40% of voters on Election Day, Costa today would lead by approximately 11 points, 52% to 41%, according to a hypothetical analysis conducted by SurveyUSA.
http://www.surveyusa.com/client/PollReport.aspx?g=0e505c16-bbb1-4aaa-aca0-db6c4cfce2ca