There's not just the one GE. If the French see the EU playing hardball on Brexit it might influence votes for/against Le Pen/Macron.
I'm not understanding your reason for "the EU would therefore want the Tories to have as large a majority as possible". I would think it's the reverse.
I'm not understanding your reason for "the EU would therefore want the Tories to have as large a majority as possible". I would think it's the reverse.