Two thirds of Germans want Angela Merkel ousted as the country's Chancellor as she suffered her latest hammer blow in the polls.

Sixty-four percent of citizens want a new face in the hotseat when the nation heads to the polling stations for September's election, according to the most recent gauge of public opinion.

YouGov's figures revealed that only eight percent of Germans think Merkel should definitely keep the title she has held for the past 12 years.

The gap is narrowing between Angela Merkel (pictured) and her political rivals in the election

German Social Democrat Martin Schulz has been chipping away at Merkel's lead in the polls

The poll showed 42 percent of those who responded believe it is definitely time for Merkel to step aside, with a further 22 percent thinking it is probably time for somebody else to take the reins.

The Chancellor's dwindling support was portrayed by just 19 percent saying she was probably the right person to stay on, with eight percent believing she is the only choice.

Since the Social Democrats (SPD) chose Martin Schulz as their candidate, the polls have swung away from Merkel's conservative Christian Democrats (CDU).

In a separate opinion poll, three left-leaning German parties would now win enough combined support to oust Chancellor Angela Merkel in September's election, according to the INSA institute in results to be published in the Bild newspaper.

The newspaper said in advance of the report that it was the first time 'in a long time' that a left-of-centre coalition would have enough support to knock the Christian Democrats out of office.

The three parties had enough votes to form a coalition after the last election in 2013 but opted not to join forces because of lingering SPD opposition to alliances with the hard-left Linke party.

People will head to ballot boxes in September

Support for all three parties fell after that and was long short of a majority before the INSA opinion poll.

The poll found that the Social Democrats would win 31 percent to 30 percent for the conservatives, unchanged in the last week.

The Linke party would win an unchanged 10 percent and the pro-environment Greens were also steady, winning seven percent for a total of 48 percent for all three leftist parties.

That would leave just 47 percent for the three other parties likely to clear the 5 percent threshold and win seats in the next parliament, the poll of 2,028 voters found.

The CDU and their Bavarian sister party would win 30 percent, the Free Democrats (FDP) 5 percent and other smaller parties below the 5 percent threshold, according to the poll.

Last month, it was reported that as many Germans would vote for Schulz as for Merkel in a direct vote for chancellor.

The Infratest dimap poll for ARD television put both at 41 percent, with support for Merkel down two points from September and for Schulz up five points.

Germans will hit the polling stations on September 24 to cast their vote.