Table:
text: United States presidential election in California, 2012
General election
By county
County Obama Votes_2 Romney Votes_4 Others_ Votes_6 Total_
Alameda 78.7% 469684 18.1% 108182 3.2% 19027 596893
Alpine 59.5% 389 36.1% 236 4.4% 29 654
Amador 38.6% 6830 58.1% 10281 3.3% 582 17693
Butte 46.9% 42669 48.9% 44479 4.2% 3873 91021
Calaveras 39.7% 8670 56.5% 12365 3.8% 827 21862
Colusa 38.3% 2314 59.6% 3601 2.1% 130 6045
Contra Costa 66.2% 290824 31.1% 136517 2.7% 11804 439145
Del Norte 43.4% 3791 52.8% 4614 3.8% 331 8736
El Dorado 39.5% 35166 57.3% 50973 3.2% 2859 88998
Fresno 49.7% 129129 47.9% 124490 1.8% 6078 259697
Glenn 35.9% 3301 61.3% 5632 2.8% 258 9191
Humboldt 59.7% 34457 32.6% 18825 7.7% 4404 57686

text: United States presidential election in California, 2012
General election
By county
County Obama Votes_2 Romney Votes_4 Others_ Votes_6 Total_
Imperial 65.2% 25136 33.2% 12776 1.6% 620 38532
Inyo 42.8% 3422 54.2% 4340 3.0% 242 8004
Kern 40.5% 89495 57.3% 126618 2.2% 4900 221013
Kings 41.4% 12979 56.4% 17671 2.2% 701 31351
Lake 56.4% 13163 39.5% 9200 4.1% 955 23318
Lassen 28.5% 3053 68.0% 7296 3.5% 376 10725
Los Angeles 69.7% 2216903 27.8% 885333 2.5% 77378 3179614
Madera 40.2% 16018 57.3% 22852 2.5% 996 39866
Marin 74.1% 99896 22.9% 30880 3.0% 3955 134731
Mariposa 39.0% 3498 57.3% 5140 3.7% 335 8973
Mendocino 66.0% 23193 27.5% 9658 6.5% 2286 35137
Merced 53.0% 33005 44.3% 27581 2.7% 1636 62222
Modoc 27.7% 1113 69.1% 2779 3.2% 130 4022

Question: Which county had the lower percentage of votes for Obama in the 2012 California US presidential election: Amador, Humboldt, or Lake?