Coming off a shockingly large re-election win last year, Maine Republican Sen. Susan CollinsSusan Margaret CollinsOvernight Energy: Dems raise new questions about Pruitt's security | EPA rules burning wood is carbon neutral | Fourth GOP lawmaker calls for Pruitt's ouster | Court blocks delay to car efficiency fines How much does the FDA really do to promote public health? Trump aide: Mueller probe 'has gone well beyond' initial scope MORE proved last week that she is now ready to exert her will as one of the most influential members of the Senate.

Collins was undoubtedly a winner of last week as she, along with Democratic Sen. Ben Nelson (Neb.), marshaled their economic stimulus bill to passage in the Senate. And once that was done, Collins held firm, saying she wouldn

The win, said University of Maine political scientist Richard Powell, showed that Collin