Two reference publications that have official election returns for the 2016 elections are expected from the printer in November 2017. The Federal Election Commission always publishes a book of election returns, for federal office, after each congressional election. The next version will be called Federal Elections 2016 and the FEC expects to have it ready next month. The book is free and includes primaries as well as the general election.
Congressional Quarterly expects to publish America Votes 32, also in November. Each volume of America Votes has the general election vote for gubernatorial, presidential, and U.S. Senate races, by county, at least for the major parties. Other parts of the book include the total vote for all candidates who were on the ballot, along with declared write-in candidates if the state tallied them. The book includes primaries as well. This series of books, published every two years, has been appearing ever since 1956. Many public libraries carry them as reference books.