A key element of Sen. Ted Cruz's win in the Iowa Republican caucus might have been his specific TV targeting, leading up the Monday vote.
Cruz aired 29 unique TV spots from December 1 through January 30, according to Political TV Ad Archive -- more than any candidate of either party. This tally includes commercials for specific political candidates and their affiliated super PAC (Political Action Committee) spots.
Hillary Clinton -- who appeared to be in a virtual tie with Sen. Bernie Sanders, but eked out a victory on the Democratic side -- aired 21 different spots, followed by Sen. Marco Rubio also at 21. Sanders aired 20 different spots.
Three Republican candidates were next: Jeb Bush was at 15, Ben Carson, 7, and Donald Trump had a mere three.
But far and away, it was Clinton and Sanders who occupied Iowa TV airwaves for the last two months in terms of duration. Clinton compiled 5,268 advertising minutes, and Sanders totaled 5,011.
Rubio, who had a strong third-place showing on the Republican side, was at 3,473 minutes of total advertising time.
The next three Republicans were in a virtual tie for the next position: Cruz with 1,893; Trump at 1,836; and Bush, with 1,801.