There were 3 republicans running?
Bill Cassidy with 40.88%, Rob Maness with 13.73%, and Thomas Clements with 0.96%. There was also a Losertarian, Brannon McMorris with 0.88%. There were also three other Democrats besides Landrieu, but each pulled under a percent. See results.
In the runoff, I'd expect almost all the Republican votes to go to Cassidy, and probably most of the Libertarian vote as well.