Richard Lugar 's primary defeat is the latest blow to the political center in the U.S. Senate . one moderate senators in both parties are retiring four years . Richard Lugar 's , who defeated Lugar , advocates confrontation over compromise . Indianapolis , Indiana ( CNN ) -- Richard Lugar 's landslide loss in Tuesday 's Indiana Republican primary is n't just a 36-year veteran getting tossed out of office before he wanted to go . After conceding defeat , the U.S. Senate slammed Richard Mourdock 's approach .
Richard Lugar 's primary defeat is the latest blow to the political center in the U.S. Senate . one moderate senators in both parties are retiring four years . Richard Lugar 's , who defeated Lugar , advocates confrontation over compromise . After conceding defeat , the U.S. Senate slammed Richard Mourdock 's approach .