"The NRSC sent six workers to the Kansas City area for the final 10 days, and they knocked on more than 10,000 doors in Johnson County alone, a party official said. A Washington phone bank set up by the NRSC also made more than 40,000 phone calls in the final three weeks."
Read more: http://www.politico.com/story/2014/08/kansas-senate-2014-results-pat-roberts-milton-wolf-109748.html#ixzz3FNn1OpSv
That's not exactly a scorched earth campaign by the GOPe. Over 250,000 people voted in the Republican primary. Six people for 10 days and 40,000 calls, most of which probably go unanswered due to caller ID, isn't a shock and awe type blitzkrieg.
Besides if Milton Wolf would have made a persuasive case, this final activity by Roberts wouldn't have mattered. Most of the TEA Party people I know didn't vote for Wolf because they weren't sure whether he was a true conservative or not. There was a level of distrust which would have eliminated if Wolf had run an effective campaign.