Most "fickle" state?

[iceman]

Which US state do you think is the most fickle? Fickle in the sense that it frequently change preferences for the parties of their elected statewide officials?

One state that I can think of is North Carolina, it frequently changes party with it's governors recently. One of the senate seats also has a pattern of throwing out incumbents.

[Roll Roons]

New Hampshire for sure. Quite possibly the swingiest state in the country.

[Crumpets]

Maine - "Oh we'll always vote for Democrats for president, but tee hee, let's give one of our four electoral votes to Trump because he won the northern part of the state. Also, let's have one Republican senator and one independent-but-basically-Democratic senator who both always win in landslides lol. Oh and here's Paul LePage cuz black people are totally, like, rapists, lmao."

[Chief Justice PiT]

     Maine is a very independent-minded state, and moderate enough to show it in voting. Vermont and Alaska are too, but Vermont is too liberal and Alaska too conservative to really show it as clearly.

[Mr.Bakari-Sellers]

PA, this is the most fickle state. The state voted for Trump in 2016 and it voted D in 2012, 2014 and 2018 based on Bob Casey Jr and Tom Wolf. Now, it's back to a tossup again and is in play for Trump to win it, again. But, if PA votes to right, then AZ and ME2 will be the swing

[Voice of low info America]

New Hampshire for sure. Quite possibly the swingiest state in the country.

Those women are angry.

[Paul Biya isn’t going far enough]

Pretty much anywhere in rural New England. (NH, VT, ME, some parts of MA/RI/NY)

[The '90s' Last Champion]

NH, probably, also this should probably be in one of the Election Analysis Boards

[インターネット掲示板ユーザー Punxsutawney Phil]

NH, probably, also this should probably be in one of the Election Analysis Boards

[Mr. Smith]

Wisconsin.

[°Leprechaun:'s Rainbow]

Perhaps Iowa, it is unlikely that Trump will lose the state, but it has swung back and forth a great deal in the last 40 years.

[Non Swing Voter]

Traditionally: Maine, New Hampshire, Iowa, Ohio.

Current period: Wisconsin, Maine, Arizona, Michigan.

Potential future swing states post Texas flip: Michigan, Minnesota, Connecticut, Arizona.

[iceman]

I remember NH-01 flipping back and forth GOP and DEM in 2008, 2010, 2012, 2014 and it ended when Carol Shea-Porter finally retired LOL. So I guess New Hampshire is also a good contender.

[Morgan Kingsley]

Iowa or Ohio probably Ohio

[VPH]

Montana, I'd say. Some of the swings (2004-2008 was remarkable) + willingness to split tickets for Bullock and Tester + relatively strong 3rd party performances.

[Mr.Bakari-Sellers]

KS is gonna be a blue state this election, since Warren is gonna be Veep and Barb Bollier and Gov Kelly are similar to Warren

[Adjective-Statement]

The Rust Belt in general.

[CentristRepublican]

New Hampshire for sure. Quite possibly the swingiest state in the country.

NH01 in particular was America's most fickle congressional district in the early 2010s, alternating frequently between Frank Guinta (R) and Carol Shea-Poter (D). Shea-Porter held the seat in 2006 and 2008 (Democratic waves) but was unseated by Guinta in the 2010 red wave. In a 2012 rematch she won her seat back but in a 2014 rematch of a rematch Guinta won (2014 was a red year). In 2016 Shea-Porter won but retired in 2019, and was replaced by Chris Pappas (D), who has since then (gasp!) held the seat.

[Drew]

Wisconsin.

This.  We employ both Ron Johnson and Tammy Baldwin after all.

[Non Swing Voter]

Maine was dead on for the reasons above.

Other candidates = Nevada, New Hampshire, Michigan, Wisconsin.

Maine and New Hampshire going for Biden with relative ease were a good sign for him. 

[CivicParticipant]

Alaska.

[Proud Family Values]

Gotta go with my homeslice state of PA.  I love it to death but it's the ultimate swing state.  It really goes from one party to the other.  Just when you think it's gone blue, it goes red the next time around.  Just when you think it's gone completely red, it flips and goes blue.

[CentristRepublican]

Wisconsin.

This.  We employ both Ron Johnson and Tammy Baldwin after all.

And Baldwin won by a lot and Johnson won in 2016 to Russ Feingold.
I read somewhere that WI's two senators are more politically divergent than any other state's senators (which makes sense, since the vast majority of states have 2 Democratic or 2 Republican senators, and even when they have a 1-1 senate delegation, it typically doesn't include both a hard progressive and a staunch conserative).