Maagar Mochot conducted a poll of 602 people with a 3.9% margin of error that was published by Yisrael HaYom & I24 News on March 1 2019.
Current Knesset seats in [brackets]
38 [11] Blue & White (Gantz, Lapid, Yaalon & Ashkenazi)
29 [29] Likud (Netanyahu)
09 [05] United Right List (Peretz, Smotrich & Ben Ari)
08 [03] Hayamin Hehadash (Bennett & Shaked)
07 [18] Labor (Gabbai)
07 [06] Hadash-Taal (Odeh & Tibi)
06 [07] Shas (Deri)
06 [06] United Torah Judaism (Litzman)
06 [05] Meretz (Zandberg)
04 [10] Kulanu (Kahlon)
Under 3.25% electoral threshold:
3% [–-] Zehut (Feiglin)
2% [05] Yisrael Beitenu (Liberman)
2% [01] Gesher (Orly Levy)
1% [06] Raam-Balad (Abbas)
0% [–-] Yachad (Eli Yishai)
3% [–-] Others:
00 [01] Tzomet (Oren Hazan)
00 [–-] Magen (Gal Hirsch)
62 [66] Current Right-Religious Coalition+Y.B.
58 [54] Current Center-Left-Arab Opposition-Y.B
Additional Questions:
Who is better suited to be Prime Minister?
43% Netanyahu, 36% Gantz, 21% Other answers/Don’t know
Are you in favor of a National Unity Government of Likud & Blue and White?
40% No, 32% Don’t know/Other answers, 28% Yes
Note: 58% of Blue & White voters are former Zionist Union voters, 17% are former Kulanu voters, 13% are former Joint List voters and 10% are former Likud voters.
Jeremy's Knesset Insider 
of those planning to vote Kachol Lavan, there must be a significant % who are former Yesh Atid voters
I also have trouble believing that 13% of Kachol Lavan’s voters (the equivalent of 4-5 Knesset seats) voted for the Joint List last election. I’m not sure how many Arab voters thought Meretz was too right wing in 2015, but now want to vote for the party of Moshe Yaalon and Zvi Hauser.
This sounds like either a poorly done poll, or anti-Gantz propaganda from Israel HaYom.
Yeah, I’m guessing that list is people who didn’t vote for Yesh Atid in the past. I think it’s NOT “who did current BW voters vote for in the last election” but “If you didn’t vote Yesh Atid last time and plan to vote BW this time, who did you vote for last time?”–in other words, where is Blue and white ‘stealing’ votes from.
Just a guess though.
was this done after the Indictment announcement?