Illinois Republicans have Scott Brown fever, too. Said state party Chairman Pat Brady: “Like Massachusetts, Illinois is under control of the single-party rule Democrats who have had unbridled control of the state of Illinois for the last eight years and have brought us to the brink of financial collapse.” The GOP’s best hope may be the Brown-like moderate Mark Kirk, but he will have to fight off a contingent of more conservative candidates to secure the party’s nod. With the field very much divided, Kirk has pulled abreast in the polls of the leading Democrat candidate, State Treasurer Alexi Giannoulias.

Sen. Arlen Specter’s seat belonged to the Republicans for decades, and it may become theirs again—despite Specter’s decision to join the Democrats’ ranks last spring. In the latest polls, Specter has pulled ahead of his liberal challenger Rep. Joe Sestak. Republican Pat Toomey, the former head of Club for Growth, continues to trouble him though. The conservative Toomey is also reaching for a little of Scott Brown’s magic, emailing supporters Wednesday, “Scott Brown’s win last evening demonstrates that we can win in Pennsylvania, but I need your help to do it.”