1. Yes, his position as PM and chief In advocate will be incompatible with organising an orderly exit from the EU, not to mention Mad Boris will want his job ASAP.
2. See above, probably and very unfortunately. Think posh version of Trump.
3. Not yet, but campaigning has been suspended until Sunday.
4. Small because the Labour Party's strategy so far has been to do as little as possible while watching the Tory party self-destruct, as it might well do if Out win.
The basic problem for In is that their strongest suit is the economic argument but voters appear not to believe them:
"Just 17 per cent of voters believe George Osborne’s key claim that households will be £4,300 worse off after Brexit, while 47 per cent accept Vote Leave’s statement that Britain pays £350 million to the EU every week."
Polls