The proponents of the proposition made use of their large campaign fund to run numerous ads on TV throughout California. They used a combination of celebrities, many of whom were personally afflicted with diseases that could potentially be treated with therapies arising from stem cells, as well as a long list of scientific experts. With a campaign war chest of over $25 million, the proponents of 71 were able to bombard the airwaves with a steady stream of advertising that played a significant role in the measure's passage. A selection of some of these ads follows. Real Player, available for free here, is required for viewing these ads.

(Source for above videos:www.yeson71.org)

On the other hand, the opponents of the proposition, with a budget of less than $1 million, were able to run only one major television ad. Their lack of presence on the airwaves is almost certainly partly responsible for their failure to defeat the measure. Their main advertisement follows:

Advertisement Against Proposition 71