How strong of a presidential candidate would the previous poster be?

[Vice President Christian Man]

No offense, but I don't think enough voters care about someone's gender or sexual orientation, at least enough to affect the outcome of an election and this is coming from an evangelical who's generally socially conservative. It's not like it's 2004 anymore or a scandal of any kind. Maybe some on The Christian Right might try to make it into a political issue, but most of the opponents of trans issues weren't going to vote for Peebs in the first place.

To answer your question, I'd say slightly above average. You'd probably keep much of Trump's base and win over some Trump-Biden voters but your support of Trump would hurt suburbanites, particularly women who left the party. If you manage to moderate enough on a few issues, you could even win some dissatisfied Dems who still voted for Clinton/Biden (such voters in places like Minnesota, Scranton PA, and Lake County CA come to mind).