Question: Who is the incumbent in the Washington 1 district? 
SQL: SELECT "Incumbent" FROM "1-1805191-48" WHERE "District" = 'Washington 1';

Question: How many categories of first elected are in Washington 4 district? 
SQL: SELECT COUNT("First elected") FROM "1-1805191-48" WHERE "District" = 'Washington 4';

Question: What was the result in the election where the date of first elected was 2000? 
SQL: SELECT "Results" FROM "1-1805191-48" WHERE "First elected" = 2000.0;