I liked it. As did my wife, daughter (21) and son (15). And it generated some after-movie conversation which is always a good sign. In fact we measure the success of a movie by how much after-movie discussion we engage in.
Many of the IMDb review criticisms are "it's not like the book" so we can ignore those: Some people just can't get past the fact that films are most often not like the book (even LOTR took huge liberties) and to go in expecting it will be is foolish. EDIT: As it turns out the screen adaptation was by the original author anyway, so no "not like the book" complaint is valid.
But the reason, I think, some people did not like is that it's thoughtful and, unlike most action movies, spans almost his entire life.
It's not a perfect film, there were perhaps two points where my screenwriting head went "what?", but it is not by any means a bad film.
###NON-SPECIFIC SPOILERAGE FOLLOWS###
What the film does suggest is that the war between the north and south in the US was because vampires find slavery ideal: They can own slaves and then do whatever they want with them without being questioned.
The first part of the film involves Abe fighting vampires on a one-to-one basis, but then moves into his political career where he knows he's still fighting vampires but at a distance instead. Ultimately he has to go hand-to-hand again for the final confrontation.
###END OF SPOILERAGE###
The vampiric theme is wound into the actual events of Lincoln's life and is treated as a metaphor for slavery. And I can't say that I disagree with the suggestion.
Weirdly enough, though a "summer blockbuster" this film is guaranteed to annoy and upset some people - because of what it says. As one positive reviewer said "You'll have to bring your brain to enjoy this movie."
And I find that rather refreshing.
What's on the turntable? No idea.