How many states voted for both Barack Obama in 2008 and Mitt Romney in 2012?
2
2
2
5
2
5
2
3
5
2
3
5
2
4
3
5
2
4
3
5
2
1
4
3
5
2
1
4
3
5
2
1
4
3
5
2
1
4
13
3
5
2
1
4
13
3
5
2
7
1
4
13
3
5
2
7
1
4
13
3
5
2
7
1
4
13
3
8
9
5
2
7
1
4
10
13
3
8
9
5
2
7
6
1
4
10
13
3
8
9
5
2
7
6
11
1
4
10
13
3
8
9
5
2
7
6
11
1
4
10
13
3
8
9
5
2
7
6
11
1
4
10
13
3
8
9
5
12
7
6
11
1
4
10
13
3
8
9
5
12
7
6
11
1
4
10
13
3
8
9
12
7
6
11
1
4
10
13
3
21
8
9
12
7
6
11
1
4
10
13
21
8
9
12
7
6
11
1
4
10
13
21
8
9
12
7
6
11
1
10
13
21
8
9
12
7
6
11
1
10
13