One of two potential citywide initiatives aimed at allowing the social use of marijuana has failed to make the ballot after falling short in verified petition signatures, the Denver Elections Division said Monday. That means Denver voters won’t get a chance in the Nov. 8 election to allow private marijuana clubs, which some other Colorado cities and towns have sanctioned. But they still might have the option of voting for a broader measure that would legalize the social use of cannabis products in some regular businesses, such as bars or cafes or even yoga studios.