These statements were proved false yesterday Aug 11th.
Incidentally, normally a bet will be reviewed at the event date. When an event outcome occurs before the event date, notification can be sent via e-mail, as described here:
For not making the thread cluttered you can shoot a quick email to us at [admin at betsofbitco.in] for your notifications.
As far as bets made once the event outcome was known:
It is still open and I think people bet false on it yesterday after the VP announcement.
Any bets made on those after Aug 10th (last day before the event's outcome was determined) get canceled. This is described in a previous post:
Post hoc bets are cancelled.
And it also referenced in the Help page:
"Q.) What happens after I bet?"
"A.) [...] If the statement turns out to be true or false before the deadline, bet deadline is changed to the end of previous day and bets are closed."
Those two you linked to were:
Marco Rubio will be selected as Vice Presidential running mate for the GOP presidential nominee.
Marco Rubio will be the GOP nominee for Vice President
Here's a another open one:
GOP convention will select Ron Paul as vice presidential candidate
Here's one that is "waiting" (closed to new bets) and can be ended as well:
Mitt Romney Will Choose A Woman As His Running Mate