Kennedy-Goldwater-Wallace-Nixon-Carter-Reagan-Reagan-Bush-Clinton-Clinton-Bush-Kerry-Obama-Obama
A southerner, he was a Democrat until 1964. Betrayed over the Democrats becoming the party of Civil Rights, hr backed the more conservative candidates in 1964 (Goldwater), 1968 (Wallace), and 1972 (Nixon). In 1976, happy over a southerner nominated for president, he voted for Carter, but in 1980, he was annoyed with a lagging economy, joining many southerners in becoming Carter/Reagan voters. Continually voted Republican until another southerner, Bill Clinton, was nominated. In 1992 and 1996, he voted for Clinton, but in 2000, with two 'southerners' on the ballot and Gore more liberal and less charismatic than Clinton, voted for Bush (like many other southernors, he became a Clinton/Bush voter). In 2004, pleased with the Iraq War, he voted for Bush again. In 2008, wanting to make amends for previously anti-African-American behaviour (voting for Goldwater and Wallace), and the fact that the economy had tanked, he voted for Obama, and did so again in 2012.
Or, alternatively, he could be someone from Southern Illinois, too - Southern Illinois is culturally similar to the South in many ways.