CREATE TABLE table_27440 ("City" CLOB, "Population" FLOAT, "Registered voters" CLOB, "Democratic" CLOB, "Republican" CLOB, "D\\u2013R spread" CLOB, "Other" CLOB, "No party preference" CLOB)

What is the d-r spread if the no party preference is 31.8%?
SELECT "D\u2013R spread" FROM table_27440 WHERE "No party preference" = '31.8%'
SELECT "D\u2013R spread" FROM "table_27440" WHERE "No party preference" = '31.8%'