It is a bump from the Uncle Sugar comments. Also some people would be voting Huckabee against the RNC trying to silence the issue. When Reince distanced himself it helped Huckabee. Huckabee was on Fox promoting his speech as well. Some Jeb/Christie voters may have switched.
Boehner and congress may have got a bump from the issue as well.
I agree with you, Huckabee was trying to put forward a counter narrative to the "war on women". This should be encouraged, even if I have my doubts about his choice of a counter narrative, and think he is unsuitable to become president.