In the 1976 election, he won 65 percent of the vote over Democratic Secretary of State Michael Howlett, who had defeated incumbent Governor Dan Walker in the primary and who had the support of Chicago Mayor and Cook County Democratic Party chairman Richard J. Daley. Thompson was the first candidate for governor to receive over 3 million votes; his tally of 3,000,395 remains the largest number of votes ever cast for a candidate in an election for Governor of Illinois. His first term was for only two years because Illinois moved its gubernatorial election from presidential-election years to midterm-election years. Thompson was re-elected to a full four-year term in 1978 with 60 percent of the vote, defeating State Comptroller Michael Bakalis. In 1982, Thompson was very narrowly re-elected over former U.S. Senator Adlai E. Stevenson III. Thompson won the contest by only 5,074 votes. A rematch in 1986 was expected to be almost as close, but the Democrats were severely hamstrung when supporters of Lyndon Larouche won the Democratic nominations for lieutenant governor and secretary of state. Stevenson refused to appear on the same ticket as the LaRouchites, and formed the Solidarity Party with the support of the regular state Democratic organization. With the Democrats badly split, Thompson skated to victory in the general election. Thompson was accused of hiding the sad shape that Illinois' economy and budget were in while campaigning, but once elected, calling for an emergency session of the Illinois legislature to address the crisis.