See which presidential candidates spent the most money on Facebook ads in recent months

>>> See which candidates spent the most on Facebook ads over the last 90 days >>> See which candidates spent the most on Facebook ads over the last 90 days Photo: File Images Photo: File Images Image 1 of / 18 Caption Close See which presidential candidates spent the most money on Facebook ads in recent months 1 / 18 Back to Gallery

Facebook has seen its share of scandal over the last few years, but it remains a viable political tool for all the notable candidates running for president in 2020.

A recent story in the Houston Chronicle highlighted candidate Julian Castro's Facebook ad spending after a successful showing last week at the first Democratic debate of the year.

Read the full story on HoustonChronicle.com: 2020 campaigns spend heavily on Facebook ads, despite scandals of 2016

The story highlighted the $78,000 he spent in one day after the debate. That's just a small piece of the $14 million spent by presidential candidates and their supporters over the last 90 days, according to the Facebook's ad library, which offers a window in to each candidates' ad spending on the platform.

Over the past three months, two Democratic candidates have spent more than $1 million on Facebook ads. Incumbent President Donald Trump also hasn't been shy about campaign spending on the platform.

>>> See what the most prominent candidates spent on ads in the last 90 days

Julian Gill is a digital reporter in Houston. Read him on our breaking news site, Chron.com, and on our subscriber site, houstonchronicle.com. | julian.gill@chron.com | NEWS WHEN YOU NEED IT: Text CHRON to 77453 to receive breaking news alerts by text message | Sign up for breaking news alerts delivered to your email here.