CREATE TABLE table_783 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Name the party or first elected is 1920
SELECT "Party" FROM table_783 WHERE "First elected" = '1920'
SELECT "Party" FROM "table_783" WHERE "First elected" = '1920'