State of The Union address tonight at 7 p.m.

Three numbers to keep in mind Tuesday night as President Barack Obama delivers his State of the Union address: 6, 30 and 43.

6: The number of seats Republicans need to gain this November to take control of the Senate.

30: The historical average of House seats gained by the other party -- in this case the Republicans -- in a two-term president's "six-year itch" midterm election.

43: Percentage. Obama's job approval rating -- a reminder that his political standing is weak, though up slightly from its recent low point, as he stands before a closely divided Congress -- and country -- to lay out his agenda for year six of his presidency.

Source: CNN

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