Poll Results: Voters support school choice In a new Pennsylvania poll, conducted by national polling and research firm Public Opinion Strategies (POS), by a 15% margin (54%-39%) respondents favored pending legislation known as Senate Bill 1. The survey was conducted April 13-14, and included 600 likely voters throughout Pennsylvania, with a margin of error of plus or minus 4.0%. 2011-04-20 2011-04-20 A_Hill