The race for the GOP nod received relatively little attention from the media and voters, but the contest often grew contentious as the candidates challenged their opponents' conservative bona fides. Smith and Welch ran TV ads attacking each over their past memberships in the Democratic Party, while Rohrer took heat for voting for a pay raise for state legislators during his time in the state House.
Smith enters the general election as an underdog against Casey. But Republicans expect Pennsylvania to be a battleground state in the presidential election, and Smith will tie Casey to President Obama at every opportunity. Smith proved his willingness to deploy his personal wealth in the primary, giving Republicans hope he will be able to compete with Casey, who finished the first quarter with more than $5 million in the bank.