If the government only gets PUP onside that will not be sufficient if the "others" vote with Labor/Greens
Senate seats after July 1 2014
Coalition 33 Labor 25 Greens 10
So Labor/Greens have 35 against 33 for Government.
An absolute majority in the Senate is 39, meaning the Government will need six extra votes to pass legislation or any other motions, as any question resulting in an equally divided vote is lost. (from AEC)
Government therefore needs to pick up three over that Labor/Greens total or 6 out of the following 8
Pup Pup Motor Enthusiasts (in with PUP) Xenephon DLP LDP (the accidental member) Family First Australian Sports