TRI conducted a poll that was taken out for Channel 10/Nana and was released on Feb 22 2015.
Current Knesset seats in [brackets]
25 [20] Zionist Union (Labor-Livni)
23 [18] Likud
14 [11] Bayit Yehudi
12 [11] The Joint (Arab) List
11 [20] Yesh Atid
08 [02] Koolanu (Kahlon+Kadima)
07 [07] Yahadut Hatorah/UTJ
06 [06] Meretz
05 [10] Shas
05 [02] Yachad (Yishai+Chetboun+Marzel)
04 [13] Yisrael Beitenu
66 [63] Right-Religious-Kahlon (Parties that have not ruled out nominating a BB coalition)
54 [57] Center-Left-Arab (Parties that have ruled out nominating a BB coalition)
Jeremy's Knesset Insider 
As far as blocs go they are now neck and neck. ZU+YA+Meretz = 42 v LIK+BY+YACHAD = 42
Even with ZU at 25 I think Bibi will have a much easier time forming a government than Herzog.
Likud+BY+Shas+YB+Koolanu+Yachad+ UTJ (won’t sit in a government with Yesh Atid, which leaves them with Bibi)= 66 seats.
ZU+YA+Koolanu+Meretz = 50. To form a government Herzog would need to bring in either UAL or UTJ & Shas (or Yachad). The problem with this, is UTJ won’t sit with Lapid so even if they manage to bring in Shas & Yachad that would only put them at 61 seats. It his highly unlikely Herzog/Livni will PM. They may be in the opposition again if they dont join Bibi’s government.
Correction if they pulled in Shas and Yachad it would give them 60 seats.
Seriously, in what universe does Baruch Marzel enter the coalition with Herzog?
Mike: He might not recommend anyone.
Plus YB and the Arabs abstain – minority government.
Will Lapid sit with Shas?
He said yes, actually.
Seems like a Herzog government would be more likely under this scenario than a Bibi government.