I haven’t seen anything official. I do recall hearing a report that the Romney campaign raised over $3 million in the 24 hours after the naming of Ryan. If that’s true, then the pick is a wash WRT the previous month’s daily average.
They raised something like 7 million online on that weekend.
Prior to that, Romney’s large numbers had been coming from big money donors and fundraisers, not online small donations. So it is a big bump, because they weren’t raising anywhere near that amount online.
I believe the point well made is the obama campaign has had no comment on how the Ryan choice has impacted their own fund raising. Had it caused any increase whatsoever it would have led every news cast of the lib networks.