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I don’t know what situation your family is in or what country you’re from, but a piece of advice I’d give is unless you are certain that your dads life will be in imminent danger if he were to leave Canada, I would not apply for asylum.

The PRRA stream has no hearing and an acceptance rate of less than 5%.

That said, it is 5% due to many false or fraudulent asylum cases, so as I said, if your dad has a really strong case on his side he might win, but if he doesn’t then he has no other option and will be deported and barred from entering Canada for a few years. I would really really suggest contacting a lawyer and not relying on anybody’s advice from here, including mine, as none of us are lawyers.
Just a quick side note too:

You can ask people here for advice, but don’t take it to heart and don’t take it as a final word, too many people love to roleplay as immigration officers and/or lawyers on here, and believe that what they are saying is the truth and the only truth.
 
I don’t know what situation your family is in or what country you’re from, but a piece of advice I’d give is unless you are certain that your dads life will be in imminent danger if he were to leave Canada, I would not apply for asylum.

The PRRA stream has no hearing and an acceptance rate of less than 5%.

That said, it is 5% due to many false or fraudulent asylum cases, so as I said, if your dad has a really strong case on his side he might win, but if he doesn’t then he has no other option and will be deported and barred from entering Canada for a few years. I would really really suggest contacting a lawyer and not relying on anybody’s advice from here, including mine, as none of us are lawyers.
PRRAs are really difficult, but that 5% mostly comes from second-mechanism PRRA applications. Due to C-12 there will be a lot more first-mechanism PRRA applications, so we will slowly start to see actual data regarding first-mechanism PRRA applications.