With charges looming, could Israel's 'King Bibi' be toppled?

For years now, even as police probed possible corruption charges, Israel's unflappable prime minister, Benjamin Netanyahu, appeared untouchable.

But Netanyahu now faces the most serious threat in his decade of political dominance, after Israel's attorney general announcedhis intention Thursday to lay fraud charges against the prime minister in three corruption investigations.

And it has his political opponents feeling emboldened that "King Bibi,"as some of his supporters have taken to calling him, can perhaps be toppled when Israelis vote in upcoming parliamentary elections.

Political scientist Reuven Hazan, of Hebrew University in Jerusalem, likened the potential charges to a "hand grenade" aimed straight at the heart of the April 9vote.

"We've never been in a situation where, in the midst of an election campaign that has turned into a close race, we have one of the party leaders indicted," Hazan told CBC News. "So how the voters will react is a complete unknown."

Netanyahu will challenge the charges in a hearing expected after the election, after which a final decision on indictment will be made. If the case does move forward, he would be the first sitting Israeli prime minister to be indicted.

Attorney General Avichai Mandelblit has accused Netanyahu of bribery, fraud and breach of trust in three cases that have been under investigation for two years.

It's alleged that the prime minister, in one of the cases, accepted expensive giftsincluding jewelry, champagne andcigarsfrom a Hollywood film producer born in Israel, in exchange for tax breaks for the mogul.

In the other two cases, Netanyahuis accused of trying to secure more favourable coverage in the media, with investigators saying that one popular news website downplayed or altered critical reports about the prime minister.

Netanyahu repeated his long-standing insistence that he is the victim of a left-wing "witch hunt," again denying any wrongdoing in a television address on Thursday night.

"I tell you, citizens of Israel, this whole tower of cards will collapse," he said. "I intend to serve as your prime minister for many years. But it depends on you. Not on the commentators and TV studios and articles. It depends only on you."

His political opponents, however, have wasted little time in calling on Netanyahu to resign. Banners proclaiming him the country's "crime minister" have begun to appear at political rallies organized by Israel'sopposition parties.

Two heads better than one?

With just over 40 days until the election, Israeli voters will be faced with a now-familiar choice: re-electing a prime minister who has governed for nearly 13 years over two stints, or trying a newer face.

Or two.

A pair of centrists, Benny Gantz, a former top general, and Yair Lapid, an ex-finance minister, have teamed up to in a bid to replace the right-wing Netanyahu. Establishing the Blue and White party named for the colours of the Israeli flag, they agreed to take turns as prime minister, if elected.

The move immediately changed the dynamic of the upcoming vote. Many Israeli voters have for years felt there is no credible alternative to Netanyahu, who is often seen as strong on security and in relations with world leaders most notably U.S. President Donald Trump.

But Gantz, who served as chief of staff in Israel's military from 2011 to 2015, has won praise for a tough stance against the country's longtime regional foe Iran. And Lapid, with a command of English that nearly rivals Netanyahu, is seen a suitable representative on the international stage.

With these new corruption charges now hanging over his head, some Israeli voters may be swayed to deny Netanyahu the prize of becoming Israel's longest-serving prime ministeranhonour currently held by founding prime minister David Ben-Gurion.

No one party will win a majority in the upcoming election, thanks to Israel's multiparty democracy. A coalition would be needed to cross the 61-seat threshold requiredto form a government. But a poll taken before the attorney general's announcement for the Times of Israel put the Blue and White party ahead with 44 seats, compared to 25 for Netanyahu's Likud party.

Word of possible charges against Netanyahu has also revived talk about Ehud Olmert, theformer prime minister jailed for sixteen months on corruption charges. Olmert who was released from prison in 2017resigned before charges were laid against him.

Criminal charges against a sitting leader would be "a blemish" on the office of prime minister, said AmnonAran, a lecturer in international politics at City University of London.

"But on the other hand, I think it does [put] in a very positive light,the Israeli judiciaryand the legal system as well."