Rep. John Boozman (R) acknowledged Friday that he’s considering throwing his name into Arkansas’ already crowded Senate primary, which will decide who will challenge Sen. Blanche Lincoln (D) this fall.Boozman, a five-term Congressman and the only Republican in the Arkansas delegation, told the Associated Press that he hoped to decide by late next week whether he would join the Senate race.If Boozman does challenge Lincoln, he would attempt to do what his brother, Fay Boozman, could not. Fay Boozman challenged Lincoln in what was then an open-seat race in 1998, and John Boozman worked for his brother on that campaign. Fay Boozman lost the contest by 13 points.Nine Republicans are vying for the opportunity to run against Lincoln this year, including state Sen. Gilbert Baker (R), who has earned the status of early frontrunner. However, some of those candidates would likely drop out if Boozman were to step into the contest.Boozman’s move could also complicate the primary field in Arkansas’ open 2nd district if one or more of those Senate candidates drop into that House race. National party officials have been backing attorney Tim Griffin (R) in the Little Rock-based 2nd district that Rep. Vic Snyder (D) currently represents.