Midgam conducted a poll with a 4.4% margin of error for the Labor Party that was leaked on Feb 12 2019.
Current Knesset seats in [brackets]
30 [30] Likud (Netanyahu)
19 [-–] Israel Resilience (Gantz) + Telem (Yaalon)
11 [11] Yesh Atid (Lapid)
09 [18] Labor (Gabbai)
07 [06] Yahadut Hatorah/UTJ
07 [03] Hayamin Hehadash (Bennett & Shaked)
07 [01] Taal (Tibi)
06 [10] Kulanu (Kahlon)
06 [07] Shas (Deri)
05 [12] The Joint (Arab) List
05 [05] Meretz (Zandberg)
04 [05] Yisrael Beitenu (Liberman)
04 [01] Gesher (Orly Levy)
Under 3.25% electoral threshold:
1.1% [05] Bayit Yehudi (Peretz) + Tekuma (Smotrich)
1.0% [06] Livni Party
Under 1% [–] Zehut (Feiglin), Yachad (Eli Yishai), Otzma (Ben Ari), Eretz Chadasha (Eldad Yaniv), Green Leaf, Magen (Gal Hirsch), Achi Yisraeli (Adina Bar Shalom)
60 [66] Current Right-Religious Coalition+Y.B.
60 [54] Current Center-Left-Arab Opposition+Gantz-Y.B
Jeremy's Knesset Insider 
I am very impressed with this internal poll. This is the first time we are seeing an authentic honest internal poll.
Have the Arab party MKs ever joined a coalition? I wonder about the point of including them on the left wing/centrist party total if they never join?
Agreed. On the other hand, some parties in “Current Right-Religious Coalition+Y.B.” could definitely join a Center-Left government (as they have in the past), so those two numbers aren’t that indicative of future coalition possibilities anyway..
On of the reasons Tibi left Joint List is he said he is willing to join a government