I've taken the Archbishop's prayer from his blog above and made a few changes to include abortion.
Novena to Saint Joseph for Canada
Glorious St. Joseph, foster-father and protector of Jesus Christ. To you I raise my heart and my hands to implore your powerful intercession. Please obtain for me from the kind Heart of Jesus the help and the graces necessary for my spiritual and temporal welfare. I ask particularly for the grace of a happy death and the special favour I now implore:
that our legislators at the national and provincial levels will protect all life from the moment of conception until natural death, including that of the most vulnerable, and that they will respect the right of medical professionals to refuse to take part in assisted-dying and abortion.
Guardian of the Word Incarnate, I feel animated with confidence that your prayers on my behalf will be graciously heard before the throne of God.
V. O glorious St. Joseph, through the love you bear to Jesus Christ, and for the glory of His Name.
R. Hear my prayers and obtain my petitions. Amen.
Our Father. Hail Mary. Glory be.
St. Joseph, pray for us.