The Pussycat Dolls, minus Nicole Scherzinger, were spotted at Pur Jeans Halloween Bash at STK in West Hollywood on Friday (October 31). The girls were in costume for Halloween, posing for the paparazzi and urging people to vote on Tuesday, and Californians to vote no on Proposition 8, an initiative that would change the California Constitution to eliminate the right of same-sex couples to marry in California. Watch the clip via YouTube below.