Election Security Act This bill directs the Election Assistance Commission to establish grant programs to support (1) states' compliance with certain voting system security requirements, including the use of voting systems that require individual paper ballots marked by hand; (2) states' audits of federal election results (i.e., manual counts of paper ballots); and (3) research and development directed at improving the security and reliability of election infrastructure. The bill also (1) requires the President to develop a national strategy to protect against attacks on U.S. democratic institutions, and (2) establishes the National Commission to Protect U.S. Democratic Institutions.