As we inch closer to 2015 when jacksonville will once again vote for mayor - we're getting a good indication of how close a race might be ... and who some of the challengers to Mayor Alvin Brown could be. Channel 4's Scott Johnson looks at a new UNF poll that asked people everything from how Mayor Brown is doing in his job to how the sheriff's office is doing in theirs. 3 it shows the mayor's approval is slipping .... but he still beats some high profile potential challengers from the republican party. 3 00-05 :20 :25The last time UNF conducted a poll mayor alvin brown was sitting comfortably with a 71% approval rating... now a year later that number had dipped to 59%... which is still much higher than say president obama or congress... but UNF Assistant Professor Michael Binder who oversaw the poll says this happens typically during first terms. 3:15:51 - it makes a lot of sense, at beginning of term you've got honeymoon period... let's give this person a shot. Then as you make policy you begin to anger the other party. but dr. binder does piont out the mayor is vulnerable in his re-election chances.They also polled the mayor against four potential republican contenders... sheriff john rutherford, Jim Overton the property appraiser, city council president bill gulliford and current state GOP Chair Lenny Curry who lives in jacksonville. The sheriff was the strongest contender...but still is six points behind the mayor. 3:16:40 - it was 41 to 35 so there's a lot of folks that haven't decided or aren't thinking about it. And there hasn't been a campaign yet. 3:17:06 - I think it's gonna' be close, it's local politics so anything could happen.It's possible someone could runa nd imploe and mayor could march to victory easily. I reached out to mayor brown's campaign about his.DAVID BEATTIE/MAYOR CAMPAIGN ADVISOR 3:21:52 - 37 points net, positive, nearly 3 to 1 job rating.When you look at rick scott and barack obama who split or negative depending on polling.So it's a strong place to be based on where country is politically. they say a lot can happen in the next year and the mayor remains committed to balancing the city's budget and keeping taxes low.DAVID BEATTIE 3:23:02 - these are hypothetical.Candidates... it's a long time before election, more than a year. I think the key right now for the mayor is focusing on balancing the budget ... revitalizing downtown, focusing on doing the job. a few other items from this poll to note is city council has an approval rating of 45% ... which is considerably higher than say congress. and the sheriff's office remains strong... at 66%. still they slippe from 71% last year.