Table: mn_gov_2010_polls
Columns: poll_source
dates_administered
tom_emmer_r
matt_entenza_dfl
tom_horner_i
undecided
sampling_error

Question: What percentage voted for Tom Horner according to the poll source with sampling error of 2.5%?
SQL: SELECT "tom_horner_i" FROM mn_gov_2010_polls WHERE "sampling_error" = '2.5%'

Question: What's the percentage of undecided according to the poll source with sampling error of 2.7%?
SQL: SELECT "undecided" FROM mn_gov_2010_polls WHERE "sampling_error" = '2.7%'

Question: When did Minnesota Poll administer their poll?
SQL: SELECT "dates_administered" FROM mn_gov_2010_polls WHERE "poll_source" = 'Minnesota Poll'

Question: How many polls show different percentages for Tom Emmer and 38% for Matt Entenza?
SQL: SELECT COUNT("tom_emmer_r") FROM mn_gov_2010_polls WHERE "matt_entenza_dfl" = '38%'

Question: What poll source administered their poll on June 14-16, 2010?
SQL: SELECT "poll_source" FROM mn_gov_2010_polls WHERE "dates_administered" = 'June 14-16, 2010'

Question: What's the percentage of votes for Tom Horner according to the poll source that claimed 31% for Matt Entenza?
SQL: SELECT "tom_horner_i" FROM mn_gov_2010_polls WHERE "matt_entenza_dfl" = '31%'