Maine is about 1.9 times bigger than Switzerland.

Switzerland is approximately 41,277 sq km, while Maine is approximately 79,931 sq km, making Maine 94% larger than Switzerland. Meanwhile, the population of Switzerland is ~8.5 million people (7.2 million fewer people live in Maine).
Tip: This to-scale comparison of Switzerland vs. Maine uses the Mercator projection, which distorts the size of regions near the poles.