How many times was Joe Biden re-elected to the Senate before becoming vice president of the US?
6
2
2
2
4
5
2
4
5
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
6
5
3
2
4
6
5
3
2
7
4
6
5
1
3
2
7
4
6
5
1
3
2
7
4
6
5
1
3
2
7
4
6
5
1
3
2
7
4
6
5
1
3
2
7
4
6
5
1
3
2
7
4
6
5
8
1
3
7
4
6
5
8
1
3
7
4
6
5
8
1
3
7
6
8
1
3
7
6
8
1
0
3
7
6
8
1
9
0
7
6
8
1
9
7
6
8
0
1
9
7
6
8
1
9
7
10
6
8
1
9
7
10
6
8
1
9
7
10
6
8
1
9
7
10
8
1
9
7
10
8
1
9
10
8
2 times
13
12
9
10
8
13
12
11
9
10
8
3 times
13
12
11
9
10
14
8
13
12
11
9
10
14
ten