I doubt if either party has 250 ev's locked. There are numerous states that could flip either way.
I consider the following states a lock for the Dems: California [55], NY [31], NJ [15], MA [12] , MD [10], CT [7], Del [3], DC [3], HI [4], Ill [21], OR [7], RI [4], VT [3], and WA [11]. I am leaving out MI [17] and MN [10]. This totals: 186