The Federal political contribution tax credit is on Line 41000. Line 40900 would just show the total amount that you contributed.
The political contribution credit is non-refundable (except the Ontario credit). This means you only get it if you need it to reduce your taxes owing. So, if you don’t have taxes owning, you won’t get the credit. If you only have some taxes owing, then you'll only get enough of the credit to reduce your taxes to zero.
