Despite the fact that all of my interlocutors had university educations, sometimes including PhDs, all were so deeply invested in the idea that their insolvent state government is starved for revenue that they were unable to parse the information."
Perhaps they were just stunned that someone with a PhD doesn't know that income tax isn't the whole story?
California state revenue, 2009: $88 Billion (source: http://www.ebudget.ca.gov/pdf/BudgetSummary/SummaryCharts.pd..., chart SUM-01)
California population: 36.8 million (July, 2008; source: US Census)
CA Revenue per capita: $2391.30
Texas state revenue, 2009: $78 Billion (source: http://www.cpa.state.tx.us/taxbud/bre2008/BRE_2008-09.pdf, page 3)
Texas population: 24.3 million (July, 2008; source: US Census)
TX Revenue per capita: $3209.88
"Conservative" Texas takes in almost a thousand bucks more per person in taxes and fees than does "liberal" California.
UPDATE: I made a mistake. The numbers for Texas are reported on a biennial basis, whereas for California, they're reported on an annual basis. See my reply to cwan below for details. When you get the annual numbers from the Texas budget summary, they appear to take in about 32% less per capita than California.