Jay Feely leads the Arizona 1st Congressional District Republican primary field ahead of the July 21 contest, reflecting trader emphasis on his Trump endorsement, substantial fundraising edge exceeding $1.7 million, and high name recognition from his NFL career. Joseph Chaplik, the former state representative who resigned his seat to campaign full time, trails amid reports of negative exchanges between the two frontrunners and comparatively modest campaign resources. Minor candidates including John Trobough remain at low levels, consistent with limited polling visibility and organizational support. Recent shifts, such as Feely’s district change at party leadership urging and ongoing attacks over personal and policy matters, have reinforced the frontrunner’s positioning in the weeks before voters decide.