GOP grapples with chaotic Senate primary in Pennsylvania

A frontrunner suspending his campaign over domestic abuse allegations and a lost custody battle. An out-of-state reality television host launching a bid of his own. A hedge fund CEO possibly dropping tens of millions of dollars on a campaign to be launched in the coming weeks.

The Senate GOP primary in Pennsylvania has become a free-for-all after apparent frontrunner Sean Parnell’s decision to bow out late last month after losing custody of his children amid the allegations brought by his estranged wife. Now, the party is again contending with an unsettled field as big personalities – with big money behind them – make late entries into arguably the country’s most significant Senate race.