succeed in a big way; get to the top; "After he published his book, he had arrived"; "I don't know whether I can make it in science!"; "You will go far, my boy!"
To get crops or the harvest in means to gather them from the land and take them to a particular place. We didn't get the harvest in until Christmas, there was so much snow
to surrender someone or something to another; "the guard delivered the criminal to the police"; "render up the prisoners"; "render the town to the enemy"; "fork over the money"
If a political party or a politician gets in, they are elected. If the Conservatives got in they might decide to change it