Nearly $22 million in taxpayers funds has been spent to air the ads, with nearly half spent after Trump promised to fund what the White House calls public service announcements through his super PAC.

(Image credit: Alex Wong)

Northern Nevada has a reliably red congressional seat, represented by a Republican since it was drawn in the early 1980s. A complicated candidate and a potential blue wave this year could change that.

(Image credit: William Hale Irwin)