It didn't need calling, we voted for Brexit and she had a majority!!! Stupid woman.
I'm not saying it needed to be called. Just that when she called it, it wasn't a gamble.
Nobody gave Corbyn a hope!
She wanted a greater majority (which people expected) so that the brexit negotiations would be free from disruption. I can see exactly why she did it. Likely she wont be needed to worry about such things for much longer though.