The seats that could decide the election

‘There are 650 constituencies in the United Kingdom. But the election campaign over the coming weeks will be concentrated in the marginal battleground seats – the ones with small majorities that are most likely to change hands.
There’s no official definition of a marginal seat but people often look at constituencies where the majority – the gap between the first and second placed parties – is under 10%.
For politicians it’s obviously a good idea to focus on these battleground seats. There’s not much point in spending lots of time and money in constituencies that they already hold comfortably, or where they’re so far behind they have no realistic chance of winning.’
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