Senate Majority Leader Harry ReidHarry ReidGOP frustrated by slow pace of Trump staffing This week: Congress awaits Comey testimony Will Republicans grow a spine and restore democracy? MORE (D-Nev.) called King on election night to congratulate him on his victory. Reid seemed confident after the phone call that King would sit with the Democrats, giving them control of 55 seats in the next Congress.

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Sen. Charles SchumerCharles SchumerOvernight Finance: Dems introduce minimum wage bill | Sanders clashes with Trump budget chief | Border tax proposal at death's door Sanders, Democrats introduce minimum wage bill Top House, Senate Dems ask Interior not to eliminate national monuments MORE (N.Y.), Senate Democrats' chief political strategist, predicted earlier this year that King would join the Senate Democratic Conference.

King held what he termed a "wonderful meeting" with Snowe on Monday to discuss his transition, he told Maine TV station WGME. He also said he plans to work with both parties, regardless of which he chooses.

"It is likely that I will have to make a decision to join one of the caucuses in order to have committee assignments and to be an effective senator, but that is not the end of the discussion in terms of working with people from both sides," he said.

King also met with Sen. Susan CollinsSusan CollinsSenate takes lead on Trump’s infrastructure proposal Navy leaders defend Trump's lackluster ship budget Overnight Healthcare: CBO fallout | GOP senators distance themselves from House bill | Trump budget chief blasts score | Schumer says House bill belongs 'in the trash' MORE (R-Maine) on Tuesday to discuss plans to work together on Maine-centric issues moving forward, and he met with Reid on Monday.

— This story was originally posted at 12:17 p.m. and was last updated at 3:10 p.m.