Sacca worked for Barack Obama's 2008 presidential campaign as a Telecommunications, Media, and Technology advisor and campaign surrogate, as well as a field office volunteer. Following Obama's victory, Sacca served as co-chair of finance for the Presidential Inaugural Committee. During Obama's successful 2012 reelection campaign, Sacca served as a member of the campaign's National Finance Committee member and as co-chair of the "Tech for Obama" group. During the 2016 U.S. presidential election, Sacca was a vocal supporter of Democratic Nominee Hillary Clinton, appearing in various fundraisers around the country. He spoke against Trump, and in response to President Donald Trump's 2017 executive order banning travel from seven predominantly Muslim nations, Sacca donated $150,000 in matching donations to ACLU. Sacca donated to the Lincoln Project, a Republican-led super PAC opposing the re-election of Donald Trump and Republican Senators who supported him.