Honestly, people are generally too reserve and all evidence during Day 1 is so circumstantial that the chances of actually getting a Mafia unless they significantly slip up is low. Day 1 voting tends to be reactionary and random. It can be retrospectively useful to see who is Mafia but at the time, not really. So really it ends with the Townies more often than not lynching their own. Mafia have 3/6 of majority votes if they really wanted to be aggressive and reckless.

If "no lynch" is so suspicious of a Mafia move then why would a Mafia use it? Especially given that they stand to gain more power from a wrongful lynch on Day 1?