The following lets you vote over and over. Not in seconds (per each), but less than a minute ain't bad.
Executive summary: remove all three of Cache, Cookies, & Plugin's
specific to "seniorclassaward.com". Fortunately, at least for the Safari browser, that's really reeeallly easy:
--->>> Goto Safari preferences, submenu P)rivacy options, then click D)etails [below and instead of "RemoveAllWebsiteData"]. Select / highlight SeniorClassAward.com, then click the R)emove button (on the lower left). Or else you could channel Terminator essence & R)emoveA)ll instead, not that that's necessary.
And you're done. Go back and vote for Val again, recycled as often as Oski's spirit moves your inner Bear.
The macro / script / automated variation is left as an exercise for a modern EECS type; haven't been that guy for decades.
Other browsers are probably do-able too. My second try was FireFox which, soorry, I flunked hacking.
[ FF preferences easily kill the cookie part of the triad, but left Cache and /or Plugin issues unsatisfied. Guessing, the Plug-in in particular is how SeniorClassAward system put the kabosh on various browsers' cookie deletion. YMMV. ]