human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Source, Date, Blagojevich (D), Topinka (R), Remainder
###Question: Which Source has a Remainder of 15%, and a Topinka of 26%?
gpt
SELECT Source FROM table WHERE Remainder = 15% AND Topinka (R) = 26%