SPRINGDALE, Ark.—A former city council member and a retired U.S. Navy captain are headed toward a runoff for the Republican nomination for an Arkansas state Senate seat, beating out candidates in a special primary that included “19 Kids and Counting” father Jim Bob Duggar. The poll results from Tuesday’s election show that Colby Fulfer, who is chief of staff for the city of Springdale, won over 46 percent of the vote. Steve Unger won over 36 percent of the vote. The two will face off in a Jan. 11 primary runoff. Duggar drew roughly 15 percent of the vote. Fulfer was elected to the Springdale City Council in 2016 and served until 2020, the Arkansas Democrat Gazette reported. Unger served 31 years in the Navy. Both announced their bids in November. They and Duggar were among four Republicans seeking their party’s nomination for the seat, which opened up following the …