Erie County, PA

41.3%

Romney

2012

Obama

57.4

Trump

48.6

2016

Clinton

47.0

48.8

Trump

2020

2020

Biden

49.8

Macomb County, MI (outside Detroit)

47.6%

Romney

2012

Obama

51.6

53.6

Trump

2016

Clinton

42.1

53.3

Trump

2020

45.4

Biden

Kenosha County, WI (Illinois border)

43.2%

Romney

2012

55.5

Obama

47.2

Trump

2016

46.9

Clinton

50.7

Trump

2020

47.6

Biden

Maricopa County, AZ (Phoenix)

54.3%

Romney

2012

Obama

43.6

Trump

47.7

2016

Clinton

44.8

47.7

Trump

2020

Biden

50.9

Erie County, PA

41.3%

Romney

2012

Obama

57.4

Trump

48.6

2016

Clinton

47.0

48.8

Trump

2020

2020

Biden

49.8

Macomb County, MI (outside Detroit)

47.6%

Romney

2012

Obama

51.6

53.6

Trump

2016

Clinton

42.1

53.3

Trump

2020

45.4

Biden

Kenosha County, WI (Illinois border)

43.2%

Romney

2012

55.5

Obama

47.2

Trump

2016

46.9

Clinton

50.7

Trump

2020

47.6

Biden

Maricopa County, AZ (Phoenix)

54.3%

Romney

2012

Obama

43.6

Trump

47.7

2016

Clinton

44.8

47.7

Trump

2020

Biden

50.9

Erie County, PA

41.3%

Romney

2012

Obama

57.4

Trump

48.6

2016

Clinton

47.0

48.8

Trump

2020

2020

Biden

49.8

Macomb County, MI (outside Detroit)

47.6%

Romney

2012

Obama

51.6

53.6

Trump

2016

Clinton

42.1

53.3

Trump

2020

45.4

Biden

Kenosha County, WI (Illinois border)

43.2%

Romney

2012

55.5

Obama

47.2

Trump

2016

46.9

Clinton

50.7

Trump

2020

47.6

Biden

Maricopa County, AZ (Phoenix)

54.3%

Romney

2012

Obama

43.6

Trump

47.7

2016

Clinton

44.8

47.7

Trump

2020

Biden

50.9

Erie 12

Erie 16

Erie 20

Pinellas 12

Note: Preliminary county results for 2020 are as of Nov. 6.

Source: State election offices