(This April 21 story corrects to remove inaccurate quote "Mrs Le Pen is much more disciplined" from paragraph 9)
PARIS (Reuters) - French President Emmanuel Macron cleared a major hurdle on the path to re-election with a combative TV debate performance against far-right candidate Marine Le Pen that convinced most viewers, a poll said, even if he was still deemed arrogant.
Although Le Pen came across as more polished and composed than in a TV duel for the presidency in 2017, Macron went on the offensive over her ties to Russian leadership, her plans for the economy and her policy for the European Union.
With the deciding vote just four days away, some 59% of viewers found Macron to have been the most convincing in the debate, according to a snap poll for BFM TV. That suggested the almost three-hour showdown would not alter the course of the election, with Macron ahead in all previous polls.
Voter surveys have shown a widening of Macron's lead over Le Pen to as much as 56%-44% since the first round on April 10, and analysts said the debate was unlikely to swing voting intentions in Le Pen's favour.
"Yes, Emmanuel Macron won but his adversary has avoided a repeat of last time's disaster," Gerard Araud, a former French ambassador said on Twitter. "This debate doesn't disqualify her like the one in 2017, but it doesn't help her close the gap either."
On the offensive for most of the debate, Macron's most piercing line of attack was on a loan to Le Pen's party for her 2017 campaign contracted through a Russian bank.
"You talk about your banker when you talk about Russia, that's the problem," Macron told his opponent. "You depend on Russian power, you depend on Mr. Putin."
On the cost of living, rated the most important issue for the French in this election, Macron also appeared to put Le Pen on the defensive, asking her why she had voted against his plans to cap electricity prices if she wanted to help hard-up workers.
'ARROGANT VS. SCARY'
Still, during the debate Macron failed to dispel an image of haughtiness that has taken root during his presidency. He interrupted his rival repeatedly with lines like "you're lying", and "stop mixing everything up".
"Mr Macron, stop lecturing me," Le Pen retorted. By contrast, she adopted a much more courteous and softer tone than in 2017, even going so far as to applaud Macron's diplomatic efforts to prevent war in Ukraine.
An Elabe snap opinion poll on each candidate's personal characteristics showed 50% of the French thought Macron had come across as arrogant during the debate, while only 16% thought Le Pen had.
Le Pen also appeared marginally more in tune with regular citizens, with 37% of viewers saying she sounded closer to people's concerns, while only 34% thought Macron did.
She also delivered a memorable punchline, which may resonate with left-wing and younger voters who think Macron has not done enough to combat climate change, despite his early-mandate slogan "Make our planet great again".
"I am not a climate sceptic, but you're a bit of a climate hypocrite," Le Pen quipped.
But Macron's mastery of policy details made him look more "presidential", the same Elabe poll showed, while she failed to convince a majority of viewers she was fit to govern.
"Each of them has a huge weakness," Bernard Sananes of pollster Elabe said. "Emmanuel Macron is considered arrogant by more than one in two viewers. And Marine Le Pen remains scary for half of them."
(Reporting by Michel Rose; Editing by Kenneth Maxwell)