Via the Missouri Secretary of State web site:

State of Missouri – State of Missouri – Primary Election, August 07, 2018
Unofficial Results
as of 8/7/2018 11:15:40 PM

U.S. Representative – District 4
363 of 363 Precincts Reported

John Webb Republican 26,787 26.518%
Vicky Hartzler Republican 74,226 73.482%
Party Total: 101,013

Renee Hoagenson Democratic 24,139 51.871%
Hallie J Thompson Democratic 22,398 48.129%
Party Total: 46,537

Steven Koonse Libertarian 312 43.944%
Mark Bliss Libertarian 398 56.056%
Party Total: 710

Total Votes: 148,260

[emphasis added]

There were two very good candidates in the Democratic Party primary. Now comes the hard part…