It looks like Governor Bobby Jindal was approached by the McCain campaign for serious VP vetting, but he turned down the McCain people. From the WaPo (thanks, Sahba):

Jindal was approached by McCain forces to gauge his interest in the vice presidency and told them he was not interested in being vetted due to his desire to continue on with his current job, to which he was elected just one year ago.

While the official reason that Jindal took his name out of contention was his lack of a desire to leave the Louisiana governorship, there was also real trepidation within his political inner circle that Jindal might wind up as the pick — McCain was attracted to his comprehensive health-care knowledge — and be caught up in what they believed to be a less-than-stellar campaign that could pin a loss on Jindal without much ability to change or control the direction of the contest. (link)

Here is what I said on October 29:

I expect it will come out, in months to come, that McCain specifically asked Jindal to join the ticket this past summer and Jindal turned him down. (link)

It looks like it won’t take months for the truth to ‘out’, after all. (Admittedly, he was not literally invited to join the ticket, but, hey, close enough.)