Toastmasters International does not prohibit any speech topic or content. But it recommends that members be sensitive to the diversity in the club. However, each individual club does have the right to limit speech content.
What this means is that a club sponsored by a church or mosque for the members of that religious organisition to practise evangelism and preaching cannot be stopped from speaking religion.
Similarly, a member of club sponsored by a political party for the members of the party to practise political speeches is unlikely to offend any of it’s members by giving a political speech.
Toastmasters in Kenya