Looks like you can enter each day to have better chance of winning, although it would you would have same chance of winning if everybody else did that too..
"You are now in the draw to win Scotty's pimped-out Suzuki S-Cross plus a $1000 prize pack! Don't forget to come back tomorrow and enter again for another chance to win."
Full T&Cs and entry at jump-in.com.au/show/theblock/fans-vs-faves/suzuki or via Jump-In app (Apple iOS only) at The Block Fans v Faves 2014 widget. Open to Aust. residents 18yrs+ between 11am 17/2/14 and 11.59pm 1/4/14 (AEDT) who vote for a Block couple/room. Max one (1) entry per person per day. One (1) winner drawn 12pm 3/4/14 at the Promoter. Prize is the customised GLX Suzuki S-Cross vehicle used on The Block (max value $25,790) and selected prize package (max value $1,148). Winner published on website from 7/4/14. Promoter: ninemsn Pty Ltd ACN 077 753 461, Lvl 7, 264 George St, Sydney. Authorised under NSW Permit No LTPS/13/10273, ACT Permit No. TP13/04798, VIC Permit No. 13/3085, SA T13/2395