Searching the onscreen text of CNN, MSNBC and Fox News thus far in 2020, it is possible to scan for all airtime containing the phrase "Paid for by Donald J. Trump for President, Inc." which is the concluding text on at least some of his official campaign ads. The resulting timeline shows the total seconds of airtime this appears per day, offering a rough calculation of the number of air buys. His heaviest buys have come on Fox News, followed by CNN and MSNBC.