American Swing, from sea to mighty sea

Republicans win the US Senate majority, but the fight for control of the House of Representatives still up in the air

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The Republicans defeated Democrats in key state on Wednesday to take control of the US Senate, giving the Grand Old Party sway over a chamber of the legislature to shape laws, and allowing Donald Trump's presidency to confirm its nominations and implement his agenda.

The decisive Senate verdict corresponded with another major electoral shift - a massive Trump wave whose real magnitude can be better understood by the map accompanying this article.

As we track which party gained in which state, the change encapsulates how Trump increased his vote share across the US to chart his election triumph. His growth was especially apparent in Democratic strongholds - the biggest gain for the GOP in terms of voter percentage, for instance, was in New York, where Trump gained 6.82 percentage points.