That Sac Bee article wasn't very helpful. They didn't put in the address to vote at samsung.com/solvefortomorrow.
I also didn't see anything in the rules on samsung.com that mentioned the $70,000 for being a finalist, but that would be pretty cool if it's true.
What might help is if the school or PTA organized the students to stand in front of local stores like Raley's & Walmart asking people to vote. I don't think that would be against the rules.
If you look at the Prizes section it is under First Place of which 7 are awarded. Turns out it is mechandise and not cash. but still ....
Seven (7) First Prizes: Prize consist of the following elements:
$32,250 of Samsung® merchandise (exact items to be determined by Sponsor).
$32,250 of Microsoft® software (exact software to be determined by Microsoft).
$1,000 grant from DirecTV® (awarded in the form of a check made payable to each winning
school) and the DIRECTV GOES TO SCHOOL® package.
$4,500 of Adobe® software (software to be determined by Sponsor, in its sole discretion)
Total approximate retail value of each First Prize package is $70,000.
Another great day in the adventure of exploration and sight.
"Never doubt that a small group of thoughtful, committed people can change the world. Indeed, it is the only thing that ever has"
-Margaret Mead-