Former Rep. Rob Portman (R), just hours into his campaign for Senate, is already picking up support from his fellow Ohio Republicans.

House Minority Leader John BoehnerJohn Andrew BoehnerJohn Feehery: A political forest fire Trump's pick for Federal Reserve chief is right choice at right time The two-party system is dying — let’s put it out of its misery MORE and Rep. Bob Latta endorsed Portman on Wednesday. Portman, the former White House budget director and U.S. trade representative, became the first candidate to announce a bid for Sen. George Voinovich's (R) seat on Wednesday morning.

Boehner called Portman the "strongest candidate" to represent Ohio in the Senate. Boehner also stressed Portman's fiscal conservative bona fides.

"Rob is a capable and principled reformer, well-liked throughout the Buckeye State and well-known for his commitment to policies that help create new jobs," Boehner said in a statement. "With Congressional Democrats plotting to increase government spending to unprecedented levels, America will need an experienced public servant like Ohio