David Cameron and George Osborne at Arriva Traincare In Crewe General Election 2015

The speaker expresses gratitude to the audience, shares excitement about returning, and acknowledges previous efforts made by the audience.

How does the speaker express gratitude?

What is the speaker's sentiment about being back?

What might the speaker be referring to when mentioning 'crew'?

What does the speaker thank the audience for?

What is the context of the speech based on the provided text?