Three left-leaning German parties would now win enough combined support to oust Chancellor Angela Merkel in September’s election, according to an opinion poll by the INSA institute to be published in Bild newspaper on Tuesday.

The newspaper said in advance of the report that it was the first time “in a long time” that a left-of-center 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. Support for all three parties fell after that and was long short of a majority before the INSA opinion poll.