The combined strong conservative vote is about 13%. The undecided is 17%.
13% of the conservative base not interested in the 3 front runners is the end of the election.
17% undecided is a bit indecipherable. Are these ID’d Republican voters?
At the bottom of the linked article at Zogby.com is this
For a detailed methodological statement on this survey, please visit: http://www.zogby.com/methodology/readmeth.dbm?ID=1181
Excerpt from link:"This is a telephone survey of [Republican Primary Voters] conducted by Zogby International. The target sample is [502] interviews with approximately [26] questions asked."