Support for a two-state solution to the long Israeli-Palestinian conflict has fallen to a two-decade low among Israeli Jews and Palestinians alike, a new poll has found.

Conducted jointly by Tel Aviv University and the Palestinian Center for Policy and Survey Research, the poll found that just 43 percent of Israelis and Palestinians support the establishment of a Palestinian state alongside Israel.

The survey says the reasons for the lack of support include doubts over the possibility of implementing a two-state solution and a lack of trust in the other side.

It says support for the concept began to decline a decade ago.

The poll, conducted in June and July, and released on Monday, interviewed 2,150 Palestinians and 1,600 Israelis. It had a margin of error of 2.5 percentage points for the Palestinians and 3 percentage points for the Israelis.