Alaska's partisan lean in presidential elections

[prag_prog]

Alaska's partisan lean in presidential elections since 1996 (didn't start from 1992 due to significant 3rd party vote) -

1996: R+26
2000: R+31
2004: R+23
2008: R+30
2012: R+18
2016: R+17
2020: R+14 (likely to be somewhere in between R+13 & R+15 once after full counting is done)
 
Biden also is on track to receive the highest share for a Dem in Alaska since 1960's.
 
I don't know much about Alaskan politics. Only thing I know is that Anchorage is becoming more blue with each cycle. For those who have insight on Alaskan politics, what's the reason behind Alaska's trend towards Dems in the last decade? Is this trend sustainable enough for Alaska to become a battleground state by say 2036?

[prag_prog]

Alaska's partisan lean in presidential elections since 1996 (didn't start from 1992 due to significant 3rd party vote) -

1996: R+26
2000: R+31
2004: R+23
2008: R+30
2012: R+18
2016: R+17
2020: R+14 (likely to be somewhere in between R+13 & R+15 once after full counting is done)
 
Is this trend sustainable enough for Alaska to become a battleground state by say 2036?

2000: R+31
2004: R+23
2008: R+30 (Palin)
2012: R+18
2016: R+17
2020: R+10

That’s an obvious trend

I think you could see it a true tossup in 2028

I forgot about Palin. It makes sense now why 2008 didn't follow the trend