Direct Polls conducted a poll of 538 people with a 4.5% margin of error for Kan that was broadcast on Jan 30 2019.

Current Knesset seats in [brackets]

31 [30] Likud (Netanyahu)
23 [-–] Israel Resilience (Gantz) + Telem (Yaalon)
09 [11] Yesh Atid (Lapid)
08 [18] Labor (Gabbai)
08 [03] Hayamin Hehadash (Bennett & Shaked)
06 [12] The Joint (Arab) List
06 [06] Yahadut Hatorah/UTJ
06 [05] Meretz (Zandberg)
06 [01] Taal (Tibi)
05 [05] Yisrael Beitenu (Liberman)
04 [10] Kulanu (Kahlon)
04 [07] Shas (Deri)
04 [05] Bayit Yehudi
00 [01] Gesher (Orly Levy)
00 [06] Livni Party
00 [–-] Otzma (Marzel), Green Leaf, Zehut (Feiglin), Yachad (Eli Yishai), Magen (Gal Hirsch), Eretz Chadasha (Eldad Yaniv) and Achi Yisraeli (Adina Bar Shalom) are all under 3.25% threshold.

62 [66] Current Right-Religious Coalition+Y.B.
58 [54] Current Center-Left-Arab Opposition+Gantz-Y.B

Additional Questions:

Who is more suited to serve as Prime Minister?

47% Netanyahu, 41% Gantz, 12% Neither
49% Netanyahu, 37% Neither, 14% Lapid
50% Netanyahu, 42% Neither, 8% Gabbai

Where would you place Gantz on the political map?

34% Center, 25% Center-left, 21% Center-Right, 13% Left, 6% Right