Table: election_results_1826
Columns: district
incumbent
party
first_elected
result
candidates

Question: Who was the ran as an incumbent leader first in 1818?
SQL: SELECT "incumbent" FROM election_results_1826 WHERE "first_elected" = '1818'

Question: Who were the running candidates when Joshua Sands was the incumbent?
SQL: SELECT "candidates" FROM election_results_1826 WHERE "incumbent" = 'Joshua Sands'