The Democratic and Republican Presidential Preference Primary was held statewide on April 2. Killingworth had a 14.4% turnout (397 voters), as follows:
DEMOCRATIC: Marianne Williamson – 0, Dean Phillips – 1, Cenk Uygur – 1, Joe Biden – 192, uncommitted – 10
REPUBLICAN: Ron DeSantis – 12, Nikki Haley – 23, Donald J. Trump – 156, Ryan Binkley – 0, uncommitted – 12