USA has 538 total electoral votes and minimum 270 is needed for winning presidential elections. When a candidate wins a state all electoral votes of that states goes to him/her. Following is the list of all states with their respective electoral votes.
Alabama 9
Alaska 3
Arizona 11
Arkansas 6
California 55
Colorado 9
Connecticut 7
Delaware 3
District of Columbia 3
Florida 29
Georgia 16
Hawaii 4
Idaho 4
Illinois 20
Indiana 11
Iowa 6
Kansas 6
Kentucky 8
Louisiana 8
Maine 4
Maryland 10
Massachusetts 11
Michigan 16
Minnesota 10
Mississippi 6
Missouri 10
Montana 3
Nebraska 5
Nevada 6
New Hampshire 4
New Jersey 14
New Mexico 5
New York 29
North Carolina 15
North Dakota 3
Ohio 18
Oklahoma 7
Oregon 7
Pennsylvania 20
Rhode Island 4
South Carolina 9
South Dakota 3
Tennessee 11
Texas 38
Utah 6
Vermont 3
Virginia 13
Washington 12
West Virginia 5
Wisconsin 10
Wyoming 3