Question: The Republican head of the Congressional NextGen 9-1-1 Caucus has been the U.S. Representative for Illinois's 15 congressional district since what year?
Sentence (from "Frederick R. Lehlbach"): As a Republican, Lehlbach served as the U.S. Representative for New Jersey's 10th congressional district from 1915 to 1933 and as the representative from New Jersey's 12th congressional district from 1933 to 1937.
Relevant evidence: No