Complex sentence: Senator Mitch McConnell of Kentucky, John McCain of Arizona and Laura Bush appeared at fundraisers for Chafee, while Senator Bill Frist's PAC donated to Chafee.
Split into simpler sentences: Senator Mitch McConnell of Kentucky, John McCain of Arizona and Laura Bush have appeared at fundraisers for Chafee. And Senator Bill Frist's PAC has donated to Chafee.