19a Republicans' heart cuts support -support that's common in N. America (5,4)
I have: -L-C- B-A-. This suggests Black Bear. But I cannot parse the "ack" bit?...
9a As Ed Miliband under attack became, say, a gutless bloke. *G*Y. If the answer is UGLY, I cannot see why (except that the word Guy may be incorporated somehow?)
16a Cameron? Po-faced, ultimately false, undistinguised man needing to keep elected (5,8) 24a Restricting situation when member turns to right of arse (3,4) I guess the answers are 'Prime Minister'...
27a "Tories, say, needing time to replace Right and water down members' cover-up" = Pantyhose. I can understand the 'hose' bit, but where does the 'panty' come from?