The pro-life movement has assembled an impressive array of online resources for the May 2015 UK general election. One approach would be to:
use election2015's candidate-finder to discover who's standing where you live and how your former MP voted
find a hustings on the lists run by engaGE15 and Churches Together
put engaGE15's questions (which aren't just about life-issues) to the candidates there.
One may also use Where do they stand's semi-automated questionnaire for candidates; this is ingenious but relies on significant candidate-co-operation. My former MP refused to comment on "hypothetical bills".
Candidate finders
election2015 with former MPs' voting
Where do they stand? linked to automated candidate-questionnaire
Your next MP (not part of the pro-life movement)
Lists of hustings
Questions for candidates
Former MPs' voting records
election2015 is by CCFON (Christian Concern) and engaGE15 is by Care.