Table: amendment_poll
Columns: date_of_opinion_poll
conductor
sample_size
for
against
undecided

Question: When was the poll that showed 54% for and 22% undecided conducted?
SQL: SELECT "date_of_opinion_poll" FROM amendment_poll WHERE "for" = '54%' AND "undecided" = '22%'

Question: How many polls taken on different dates show an undecided percentage of 25%?
SQL: SELECT COUNT("date_of_opinion_poll") FROM amendment_poll WHERE "undecided" = '25%'

Question: When was Quantum Research's poll conducted?
SQL: SELECT "date_of_opinion_poll" FROM amendment_poll WHERE "conductor" = 'Quantum Research'

Question: Who conducted the poll with sample size of 2000 that shows 18% undecided?
SQL: SELECT "conductor" FROM amendment_poll WHERE "undecided" = '18%' AND "sample_size" = 2000