Teleseker conducted a poll that was taken out for Walla and was released on Feb 20 2015.
Current Knesset seats in [brackets]
24 [18] Likud
23 [20] Zionist Union (Labor-Livni)
13 [11] Bayit Yehudi
12 [20] Yesh Atid
12 [11] The Joint (Arab) List
08 [02] Koolanu (Kahlon+Kadima)
07 [10] Shas
07 [07] Yahadut Hatorah/UTJ
06 [13] Yisrael Beitenu
04 [06] Meretz
04 [02] Yachad (Yishai+Chetboun+Marzel)
69 [63] Right-Religious-Kahlon (Parties that have not ruled out nominating a BB coalition)
51 [57] Center-Left-Arab (Parties that have ruled out nominating a BB coalition)
Jeremy's Knesset Insider 
My impressions BY have arrested their slump – not necessarily good news for Yachad.
The Riz poll is a rogue poll as far as Shas is concerned. Koolanu are not doing as well as I though they would. YA doing better than I expected
Yes, I also think that BY is consistently doing better right now. I hope the party will recover even more – but for that to happen I guess it has to pull (back?) some votes from YA, which I think is doing better as Netanyahu has chased away voters BY but they have not gone to Likud but instead YA.
Regarding Yachad, I hope that it barely passes (gets 4 seats), which will mean 1-2 seats more for BY.
Additionally getting Meretz under the threshold would be great!
Pardon my ignorance but what does “nominating a BB coalition” mean please?
Means that parties with 69 mandates including Bibi’s party do not rule out supporting him.
Whilst parties with 51 mandates have ruled out supporting him
Jeremy explained that each party is asked to nominate a candidate (or party?) for PM. If one gets 61 seats, he will be asked by the President to try to form a government, even if it is not the largest party, as has happened recently. That government may end up with different members than those that nominated it, which has also happened recently.
Thank you both for your replies — the information on this site is much appreciated by those of us who are watching and worrying from afar.