The poll was conducted Feb 4-5? Its now June, almost.
I think Rassmussen screwed up the news release. At this link they give the questions for a May 27-28 survey which is what they are reporting.
http://www.rasmussenreports.com/public_content/politics/elections/election_2014/arkansas/questions_election_2014_arkansas_senate_may_27_28_2014