Coleman is currently trailing Al Franken by 225 votes in the race for Minnesota's open Senate seat. Coleman has filed an election contest that could take at least another month to be resolved.
Coleman, a Republican, had wanted to keep his offices open 60 more days to finish about 400 constituent requests. A Senate resolution approved Thursday instead requires that Coleman's cases be transferred to other Minnesota representatives.
Many files are expected to go to Democrat Sen. Amy Klobuchar. Spokesman Linden Zakula says Klobuchar's office has already seen an increase in cases.