The irony is that Mrs May comes across as vacillating about various things. There will not be an election, oh, hang on, there will be. Scotland must wait until Brexit is settled, before a vote - but hang on, the UK need not wait. We will change National Insurance, oh, no, we won't. Miliband's energy cap is rank Bolshevism - but hang on, we have our version of it.
So 'strong and stable' sounds like the drunk who keeps saying 'sober tomorrow'. On the other hand, none of this probably matters, since elections are not normally decided by stuff like this.