In many ways, Instagram posts like that are the new TV attack ad.
Candidates are using the social media platform — which boasts over 300 million active users — often as a way to show off their personal side, with a mix of photo ops, throwbacks and seemingly inspirational quotes.
But Trump has found another, more potent use: 15-second attack ads that get picked up and replayed for free on TV. It's an easy, relatively low-cost replacement for traditional television ads ...
… which, on the whole, are estimated to cost the 2016 field some $4.4 billion this election cycle, up from $3.8 billion in 2012.
Perhaps partly because TV advertising isn't what it once was. Fewer and fewer people are tuning in to live TV and sitting through the commercials. (Video via Reagan-Bush '84)
To be sure, TV ad buys remain the biggest source of spending for most campaigns. But the focus is beginning to shift to digital advertising, where campaigns can more precisely target voters.
"I recently launched a Snapchat account," Hillary Clinton said in August.
Instagram videos, in particular, have the added benefit of not being considered campaign ads by the Federal Election Commission. In other words, no need for that pesky little "paid for by" disclaimer.