Biden win 'will hasten new Israeli elections': coalition member
If Joe Biden is declared the victor, "it will hasten new elections in Israel", the parliamentarian, who requested anonymity, told The Media Line.
"It would be easier for Netanyahu to [hold an election and then] deal with a Biden White House while leading an ultra-right-wing coalition rather than today's centrist coalition," the senior parliamentarian said.
However, by contrast, Knesset Speaker Yariv Levin told The Jerusalem Post that the outcome of the presidential race, whether for Trump or Biden, would not be a deciding factor in Israel having a new election.
"I don't think that would be the relevant consideration," Levin said.
Under the Trump administration, Washington has extended significant support for the right-right wing governments of Israeli Prime Minister Netanyahu. The premier has hailed Trump as Israel's strongest ever ally in the White House.
But former vice president Joe Biden is also considered pro-Israel. Professor Jonathan Rynhold from Israel's Bar-Ilan University told The Media Line that Biden "has the longest pro-Israel record of any US politician".
Despite this, Biden's stated stance on Iran could pose problems for the Israeli leadership.
Biden, has said he wants to use the 2015 nuclear accord - a pact hammered out when he was vice-president under Barack Obama - as a "starting-point for follow-on negotiations" with Tehran.
After taking office, Trump unilaterally withdrew the US from Iran's nuclear deal with world powers, winning praise from Netanyahu.
Minister Tzachi Hanegbi warned that Biden's stance on the Joint Comprehensive Plan of Action (JCPOA), commonly called the Iranian nuclear deal, could reignite tensions between the two rivals.
"Biden has said openly for a long time that he will go back to the nuclear agreement," Hanegbi said in comments shared by The Jerusalem Post.
"I see that as something that will lead to a confrontation between Israel and Iran."
Read more: What will happen to US 'maximum pressure' on Iran after the election?
Despite his stated commitment to bipartisan ties with the US, Israel's closest and most important ally, Netanyahu has frequently been seen as siding with the Republicans.
Netanyahu had a cool relationship with President Barack Obama, appeared to favour Republican challenger Mitt Romney in 2012 and then delivered a major speech to Congress in 2015 to argue against Obama's emerging nuclear deal with Iran.