CREATE TABLE table_22126 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

What party did hilda solis represent?
SELECT "Party" FROM table_22126 WHERE "Incumbent" = 'Hilda Solis'
SELECT "Party" FROM "table_22126" WHERE "Incumbent" = 'Hilda Solis'