Table: us_senate_poll_2008_7
Columns: poll_source
dates_administered
democrat_larry_larocco
republican_jim_risch
lead_margin

Question: Name the average Lead Margin on  november 13-november 19, 2007?
SQL: SELECT AVG("lead_margin") FROM us_senate_poll_2008_7 WHERE "dates_administered" = 'november 13-november 19, 2007'

Question: Which Poll Source has a Republican Jim Risch of 43%?
SQL: SELECT "poll_source" FROM us_senate_poll_2008_7 WHERE "republican_jim_risch" = '43%'