As an early, prominent supporter of Senator Obama from the technology sector, Spinner was one of the Obama campaign's authors for its innovation agenda announced at Google's headquarters in November 2007. After election day, Spinner was asked to serve on the Obama-Biden Transition Project in its Technology, Innovation &amp; Government Reform Working Group (focusing on "Innovation and National Priorities" initiatives). During the President's 2012 reelection campaign, Spinner served as a California finance chair and founded "Technology for Obama" (T4O). He also prominently supported Hillary Clinton by spearheading the Obama campaign's effort to raise funds to retire Clinton's 2008 Presidential election campaign debt.