punctuation - Can the em dash replace both the semicolon and comma in these?

Can the em dash replace the comma and semicolon in these sentences? For example, instead of "The original sign did not have terminal punctuation; thus, the full stop goes outside the quotes to end the sentence", can we do this? (See below.)

• The original sign did not have terminal punctuation – thus the full stop goes outside the quotes to end the sentence.





• The original sign did not have terminal punctuation – hence the full stop goes outside the quotes to end the sentence.




• The original sign did not have terminal punctuation – therefore the full stop goes outside the quotes to end the sentence.




• The original sign did not have terminal punctuation – as a result the full stop goes outside the quotes to end the sentence.




• The original sign did not have terminal punctuation – consequently the full stop goes outside the quotes to end the sentence.