The Good Counsel Network does similar work to the Cardinal Winning Pro-Life Initiative. It is possible to donate online, though not via PayPal as yet, but they accept cheques too - click on "Donate" on the website for details of where to send it.
Finally, do consider donating money to SPUC to help them continue to do their excellent work on pro-life issues.
Obviously, this isn't an exhaustive list, by any means! Have a happy and holy Lent!