Senator Ernie Lopez (R-Lewes) has served the 6th District in the Senate since 2012.
Senator Dave Lawson (R-Marydel) has served the 15th District in the Senate since 2010.
Senator Colin Bonini (R-Dover South) has represented the 16th district in the Senate since 1994.
Senator Brian Pettyjohn (R-Georgetown) has served the 19th District in the Senate since 2012.
Senator Gerald Hocker (R-Ocean View) has represented the 20th District in the Senate since 2012, after serving in the House of Representatives for 10 years.
Senator Bryant Richardson (R-Seaford) has represented the 21st District in the Senate since 2014.
Senator David L. Wilson (SD 18) represents the 18th District.