Hi IJ
i too live in wirral west and am leaning towards the lib dems. I found this site http://www.tacticalvoting.org/ which has wirral west in. Also the bookies is always a good way to see rankings.
http://sports.williamhill.com/bet/en-gb/betting/g/136946/Constituency-Seat-Winner.html
both would suggest voting labour as a tactical vote….although i still think there could be a decent swing too the lib dems over last few weeks (just to confuse matters!)