Tim Pawlenty and Mitt Romney are hitting the trail for top GOP House hopefuls in some convenient places.

The two potential 2012 presidential candidates will be in two key presidential states -- South Carolina and Nevada -- in the coming weeks to raise money for big-name House candidates.

Pawlenty will be campaigning with state Sen. Mick Mulvaney (R), who is challenging Rep. John Spratt (D-S.C.). According to an invitation, he is a doing a $100 per person breakfast in Rock Hill on May 8, and he will also be attending a state GOP reception the night before in Spartanburg.

Romney, who endorsed state Sen. Joe Heck's (R) bid against freshman Rep. Dina Titus (D-Nev.), this week, will appear at a barbeque with the candidate on May 4 in Las Vegas. The cost is $100 per person and $500 for a photo opportunity, according to an invitation on Heck's website.

South Carolina and Nevada, of course, are two of the first four states in the presidential nominating process. So Mulvaney and Heck can expect plenty of help raising money in the months ahead.