While many thought the race for the Democratic nomination would be over after Tuesday's primaries, it seems to be just beginning. Hillary Clinton was able to halt Barack Obama's momentum after a huge showing in the month of February by picking up wins in three of the four states last night – Rhode Island and the crucial states of Texas and Ohio. So the campaigning continues, and all eyes are on the next big prize: Pennsylvania, where voters don't head to the polls until April. Meanwhile, Republican John McCain has secured his party's nomination, with President Bush standing behinds him.  FSRN's Leigh Ann Caldwell reports from Ohio on the latest.