ˌSuper ˈTuesday BrE AmE
in the US, the second Tuesday in March during a year when there is an election for the position of President. Before the main election in November, there is a series of ‘primaries’ (↑ primary ), in which the people in each state choose the person that they want as their party’s ↑ candidate for President. These primaries take place in the first six months of the year, but on Super Tuesday there are several important primaries all on the same day.