Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| County | McCain % | McCain Votes | Obama % | Obama Votes | Others % | Others Votes |
| --- | --- | --- | --- | --- | --- | --- |
| Barnstable | 42.1% | 55694.0 | 56.1% | 74264.0 | 1.8% | 2395.0 |
| Berkshire | 22.5% | 14876.0 | 74.9% | 49558.0 | 2.6% | 1696.0 |
| Bristol | 37.2% | 90531.0 | 60.4% | 146861.0 | 2.4% | 5728.0 |
| Dukes | 23.1% | 2442.0 | 75.0% | 7913.0 | 1.9% | 198.0 |
| Essex | 38.8% | 137129.0 | 59.1% | 208976.0 | 2.1% | 7357.0 |
| Franklin | 24.8% | 9545.0 | 72.5% | 27919.0 | 2.8% | 1065.0 |
| Hampden | 36.1% | 71350.0 | 61.4% | 121454.0 | 2.5% | 4916.0 |
| Hampshire | 25.9% | 20618.0 | 71.5% | 56869.0 | 2.6% | 2083.0 |
| Middlesex | 33.9% | 245766.0 | 64.0% | 464484.0 | 2.2% | 15781.0 |
| Nantucket | 30.8% | 1863.0 | 67.3% | 4073.0 | 1.9% | 116.0 |
| Norfolk | 39.7% | 136841.0 | 58.2% | 200675.0 | 2.1% | 7400.0 |
| Plymouth | 45.2% | 112904.0 | 52.8% | 131817.0 | 2.0% | 5096.0 |
| Suffolk | 21.2% | 57194.0 | 76.9% | 207128.0 | 1.8% | 4900.0 |
Question:
Name the mccain % for dukes
Answer:
23.1%