Senatorial candidate Ken Buck became the latest high-profile Republican to withdraw support for Republican gubernatorial nominee Dan Maes.
Buck told CBS4 Denver on Friday that Maes "is struggling to determine the best path for his campaign, his family and for Colorado, and that he "can no longer support his candidacy for governor of Colorado."
Earlier this week, former Republican Senator Hank Brown and former State Senate President John Andrews also announced they were no longer supporting Maes.
All three had previously endorsed Maes's candidacy.
Buck, like Maes, won the party's nomination behind the support of right-wing grassroots groups like the Tea Party.
Last week, Buck told a crowd of supporters "we all need to be there for Dan Maes."
In his statement to CBS4, Buck did not specifically mention a recent Denver Post report claiming Buck has embellished his record as a Kansas police officer.