MITT ROMNEY entered the final full day of campaigning in South Carolina’s primary contest scrambling to fend off challenges from more conservative rivals Newt Gingrich and Rick Santorum and insisting he’s the one that Republicans can trust to “post up well” against President Barack Obama in the autumn.

Front-runner Mitt Romney and his Republican presidential pursuers enter the final full day of campaigning today in a South Carolina primary contest significantly changed from just 24 hours earlier.

The race for the Republican presidential nomination took several twists and turns as Rick Perry dropped out, Newt Gingrich faced stunning allegations from his ex-wife and Mitt Romney struggled to maintain a shaky front-runner's standing.