Why is the once rising Joint List falling fast in polls?

NATIONAL AFFAIRS: Ayman Odeh’s Joint List would fall from the 15 seats it received in the last elections to 11 if Israelis headed to the polls today. https://www.jpost.com/israel-news/politics-and-diplomacy/why-is-the-once-rising-joint-list-falling-fast-in-polls-646619