Jeb Bush and Allies Lap Competitors in TV Ad-Spending Race

Jeb Bush and his supporters continue to lead the 2016 TV ad-spending race, outpacing the nearest competition by more than 2-to-1, according to ad-spending numbers from NBC News partner SMG Delta.

Through this week, the pro-Bush Super PAC Right to Rise has spent a total of $17.5 million in TV ads, and the campaign has chipped in an additional $440,000.

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By comparison, the next-biggest spender in the 2016 race is the pro-Marco Rubio 501c4 group Conservative Solutions Project – which doesn’t have to disclose its donors – which has dropped $7.8 million so far in TV ads.

And Hillary Clinton’s presidential campaign has spent $7.3 million, while the pro-Clinton Priorities USA Super PAC has spent nearly $200,000.

Also worth noting: Donald Trump is now on the air, having spent $86,000 total -- $54,000 of which has come this week alone.

But here's an important caveat: Given that campaigns get a discount rate for TV ads while outside groups don’t, total TV ad spending doesn’t perfectly capture the overall advertising landscape. But it gives you a good picture.