From a media release:

The Denver County Republican Party headquarters was vandalized twice this past weekend by unknown assailants. On Saturday night, October 23, more than 17 holes were driven deep into the stucco walls of the building and through a Ronnie Nelson sign, the Republican candidate for HD5. Then on Sunday night, October 24, four 5×8 campaign signs, belonging to Suthers, Buck, Gessler, and Nelson, were ripped off the walls of the building and strewn into the street.
“We are not sure if this vandalism is politically motivated,” said Denver County Republican Party Chairman Ryan Call, “but we would hope that those who do disagree with us are able to do so in a way that is not disagreeable. Our parties have different ideas about how best to fix this country, and that discourse is important, but it needs to be conducted civilly without resort to violence and vandalism.”