German voters looked set to punish the ruling Christian Democrats in two regional elections on Sunday for a long coronavirus lockdown and face mask procurement scandal, denting their prospects of retaining power later this year.

Chancellor Angela Merkel, in power since 2005, is not seeking re-election in September and her Christian Democratic Union (CDU) is already missing the “Merkel bonus” she has brought them with four consecutive national election victories.

The CDU went into Sunday’s polling in the southwestern auto hub of Baden-Wuerttemberg and the neighbouring wine-growing region of Rhineland-Palatinate with its poll numbers sliding, exacerbated by the face mask corruption scandal.

Support for the CDU at the national level slid to 31 per cent this week, its lowest for almost a year, according to an opinion poll conducted by Kantar for the Bild am Sonntag newspaper, although the next strongest party, the Greens, was stuck on 19 per cent.

About a thousand opponents of the lockdown protested outside the health ministry in Berlin on Saturday while dozens of cars drove in convoy through the city to demand a lifting of restrictions, plastered with slogans like “Fear is contagious”.

In the once-safe CDU region of Baden-Wuerttemberg, the party risks being replaced as junior coalition partner to the Greens by the Social Democrats (SPD) and liberal Free Democrats.

In Rhineland-Palatinate, where such a “traffic light” coalition of party colours already governs, the CDU was leading in opinion polls as recently as late February but has now slipped behind the Left-leaning SPD.