Let the speculation about former Governor Tommy Thompson's future continue.

Thompson refused to say today whether he would challenge US Senator Herb Kohl in November during his appearance at the state GOP convention. Political insiders consider that possibility unlikely, but Thompson has refused to rule it out.

In his speech, he said Republicans must find a candidate to knock off Kohl but then quickly changed the subject back to Democratic Governor Jim Doyle. Some of the delegates urged Thompson to run.

Thompson publicly toyed with the idea of challenging Doyle but then said last weekend his family wanted him to stay in the private sector. He deliberately did not address the Senate race in the announcement.

Republican Tim Michels says he's considering challenging Kohl.