Trump has spent around $11M on ads just on Facebook. If you go into the ad details you'll see how he targets different genders, age groups according to states:
https://www.facebook.com/ads/library/?active_status=all&ad_t...
* O'Rourke $8.4M
* Harris $1.6M
* Warren $1.3M
* Booker $800K
* Sanders $685K
* Klobuchar $365K
* Yang $120K
* Buttigieg $10.5K
Why is everybody else spending so much less than O'Rourke? Does his campaign actually have that much more money compared to the other campaigns?(Disclaimer - I find the site hard to use and maybe it's obvious to someone else that it's not correct)