Looking back at my prediction

The British general election results are as close to final as they're going to be, in that the vote in one constituency is postponed, due to the death of a candidate.

Here are the results in 649 of the 650 constituencies (with my predictions in parentheses):

Conservative 306 (300)
Labour 258 (255)
Liberal Democrat 57 (68)
Other 28 (27)

I overestimated Liberal Democrat support. While realizing that the major gains that were indicated by earlier polls would not come about, I didn't realize that the party would actually lose seats.