A pair of “super’’ political action committees supporting top Republican presidential candidates spent nearly $24 million in January, drawing upon major gifts and repeat donations from wealthy business executives, according to financial reports the groups filed Monday with the government. The super PACs - Mitt Romney-leaning Restore Our Future and Newt Gingrich-supportive Winning Our Future - raised a combined $17 million last month. That financial strength allowed the groups to hit the airwaves in key primary states with millions of dollars in expensive television ads.