CREATE TABLE table_72368 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

What district is nick lampson from?
SELECT "District" FROM table_72368 WHERE "Incumbent" = 'Nick Lampson'
SELECT "District" FROM "table_72368" WHERE "Incumbent" = 'Nick Lampson'