CREATE TABLE table_16185956_1 (incumbent VARCHAR)
SELECT COUNT(2008 AS _candidates) FROM table_16185956_1 WHERE incumbent = "Doc Hastings"
มีผู้สมัครกี่กลุ่มในเขตที่ Doc Hastings ดำรงตำแหน่ง
How many groups of candidates are there in there in the district where the incumbent is Doc Hastings?