BART to San Jose Approval: Key Demographics

sccp-a-b-chaid-5-100

BART to San Jose maintains a high overall approval rating. There is considerable variation depending on the demographics. The key variables that segment approval of the BART to San Jose project are based on party, gender, and age.

Non-Senior Democrats, those aged under 65, approve the most at 85 percent. Female Independents, Decline to State and minor parties, approve at the next highest rate, 78 percent. Senior Democrats, 65 and older, are the third most approving at 73 percent.

The least approving are young, under 45, male Republicans at only 44 percent. This is the only segment with an approval rating below 50 percent.

The other segments are all in the middle, approving at 67 percent or 68 percent.

QUESTION
Do you approve or disapprove of building BART to San Jose? IF APPROVE/DISAPPROVE: Is that strongly or somewhat? IF DON’T KNOW: Which way do you lean?

SAMPLING
The surveys each consisted of 400 live telephone interviews of Santa Clara County likely June 2010 Primary voters conducted June 16-18, 2009, October 26-28, 2009, February 15-16, 2010, and May 10-12, 2010. The margin of error at the sample median was 5 percent for each of the surveys. Quotas and/or weights were established by gender, age, party, region, and vote history as part of the turnout model.

CHAID
The Tree diagram was constructed using CHAID (Chi-Squared Automatic Interaction Detection). It is a method used to explore crosstabulated data.

Comments are closed.