If Trump wins all the states he is currently leading in, with those electoral college votes added to the current cautious 244 count:

WISCONSIN (10 electorals)
MICHIGAN (16)
PENNSYLVANIA (20)
ARIZONA (11)
ALASKA (3)
NEW HAMPSHIRE (4)

That would bring Trump to a final count of 308 electoral votes, with Hillary finishing at 230. The least sure victory for Trump is New Hampshire, where Trump is leading by just about 800 votes.