Here’s a Bob Barr television ad. I don’t know where this ad might be running, other than on the Internet. Historically, the LP has run almost no media during a campaign.
The ad doesn’t look at all like a presidential campaign ad, or that of a national interest group. It looks more like an ad that a Congressional candidate might run, in a small district where media was inexpensive and political rivals were weak. (Barr, himself, was a member of Congress, and is a former federal prosecutor.)
Barr’s campaign has less than two million dollars raised, and that’s not enough for a national campaign.