. >> paul is hoping his message of economic reform will resonate with voters and give him a charns to catch up to the frontrunners. randall pinkston, cbs news the white house. >>> bob kerry says he wants to get back into politic. kerry announced yesterday he'll seek the democratic nomination for the senate seat he used to a few weeks ago he said he would not run to replace the retiring ben nelson. kerry is a former nebraska governor and ran for president in 1992. >>> republican olympia snow wants out. snow known for moderate positions is retiring after three senate terms. she says she's fed up with the increasingly partisan politic. >> i didn't want to have to continue to explain to people well, you know, people just arguing, we can't solve problems. can't get together. i didn't think that was satisfactory. i said time and again, let's cancel recesses, work weekends. let's get it done for the country. i mean, that's what people want and should expect from their elected officials. that wasn't happening. >> potential candidates to replace snow have just two weeks to qualify for the ball