Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE has successfully sold himself as a businessman, an entertainer and a president. Now he’s ready to market his 2017 agenda.

The president-elect is signaling he’ll use Twitter, large rallies and a sharp tongue — the same weapons that won him the election — to advance his presidency.

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Trump already has millions of social media followers and an ability to dominate the media.

Starting on Jan. 20, he will be in control of the most powerful force in politics: the presidential bully pulpit.

With a Republican-controlled House and Senate, the president-elect has an enormous opportunity to pass a slew of legislation that would could both shape Trump's legacy and torpedo at least some of what President Obama accomplished during his eight years in office.

Some Democrats believe that Trump will fail as commander in chief in spectacular fashion, which would of course help them in the 2018 and 2020 elections. But many Democrats don't grasp the potential power of Trump's White House messaging operation and what they are up against.

Republicans, for their part, are salivating at what could come next.

Many think Trump will be able to steam roll his agenda through Congress given GOP control of both chambers and the insecurity of Democratic senators up for reelection in 2018 in states won by Trump.

These members include Sens. Claire McCaskill Claire Conner McCaskillMomentum growing among Republicans for Supreme Court vote before Election Day Democratic-linked group runs ads in Kansas GOP Senate primary Trump mocked for low attendance at rally MORE (Mo.), Joe Donnelly Joseph (Joe) Simon DonnellyTrump meets with potential Supreme Court pick Amy Coney Barrett at White House Names to watch as Trump picks Ginsburg replacement on Supreme Court Momentum growing among Republicans for Supreme Court vote before Election Day MORE (Ind.), Jon Tester Jonathan (Jon) TesterPence seeks to boost Daines in critical Montana Senate race This World Suicide Prevention Day, let's recommit to protecting the lives of our veterans Filibuster fight looms if Democrats retake Senate MORE (Mont.), Heidi Heitkamp Mary (Heidi) Kathryn HeitkampCentrists, progressives rally around Harris pick for VP 70 former senators propose bipartisan caucus for incumbents Susan Collins set to play pivotal role in impeachment drama MORE (N.D.) and Joe Manchin Joseph (Joe) ManchinThe Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Trump meets with potential Supreme Court pick Amy Coney Barrett at White House Names to watch as Trump picks Ginsburg replacement on Supreme Court MORE (W.Va.). Trump won Missouri, Indiana and Montana by about 20 percentage points each. He captured North Dakota by more than 36 points and West Virginia by a margin of 42 points.

The real estate mogul, despite never having run for office, eviscerated his political rivals by portraying them as weak and beholden to Washington's “corrupt” ways.

He gave his 2016 challengers nicknames, such as “low energy” Jeb Bush, “lying” Ted Cruz Rafael (Ted) Edward CruzTrump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE and “crooked” Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE.

Lawmakers, most notably Democratic leaders in Congress who get in Trump's way, could get their own nicknames.

If other red-state Democrats buck his nominees and/or his agenda, don't be surprised to see Trump visit their states to drive home his points. The president-elect loves rallies, and it's a good bet that he will be traveling outside the Beltway a lot.

There are already signs that Democrats could have trouble in holding a united front against Trump’s agenda.

Manchin, for example, was the first Democratic senator to back Sen. Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE (R-Ala.), Trump's nominee for attorney general.

It’s not just Democrats who have to worry.

Trump showed he isn't shy in going after members of his own party throughout the 2016 presidential cycle. And that probably won't change in 2017 and 2018.

The conservative-leaning House Freedom Caucus and outside right-wing groups are wary of Trump's $1 trillion infrastructure proposal and want the 45th president to focus on reducing the nation's record debt levels. The Freedom Caucus was instrumental in pushing former Speaker John Boehner John Andrew BoehnerLongtime House parliamentarian to step down Five things we learned from this year's primaries Bad blood between Pelosi, Meadows complicates coronavirus talks MORE (R-Ohio) out the door, but picking a fight with Trump is another thing entirely. Most Republicans in the House don't worry about their November election — they worry about their primaries. And crossing Trump could risk a challenge from the right in the 2018 cycle.

Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.) and Trump feuded in 2016, but in the name of party unity and policy, they have put aside their differences. And in a related development, Ryan's approval rating just hit an all-time high earlier this month.

After the election, Ryan said it's time for the Republican Party to “go big” and “bold.” Trump wouldn't have it any other way, though there are inherent risks with an aggressive strategy without a supermajority in the Senate.

Republicans who publicly ripped Trump are now getting in line, so muscling big-ticket items through the upper chamber using budget reconciliation shouldn't be that challenging. Those bills, such as ObamaCare repeal, would only need 51 Senate votes to pass. But replacing ObamaCare, building a wall along the southern border and clearing a Supreme Court nominee will necessitate 60 votes.

That’s where Trump's bully pulpit will come in, calling out Democrats from both red and purple states that he won on Election Day.

While Trump may not be up to speed on the nuances of the legislative process, those mechanics will be handled by Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Senate GOP aims to confirm Trump court pick by Oct. 29: report Trump argues full Supreme Court needed to settle potential election disputes MORE (R-Ky.) and Ryan.

Still, the fate of pending bills isn't decided by tactics. It comes down to marketing and political muscle, which play to Trump's strengths.

Trump will surely have a slew of critics of anything he wants to do. They will throw everything they have to kill his agenda.

Trump's likely response: “This bill will help make America great again. It should be passed as soon as possible.”

Democrats will need to step up their messaging game to thwart Trump's agenda. Sen. Charles Schumer Chuck SchumerSenate Democrats introduce legislation to probe politicization of pandemic response Schumer interrupted during live briefing by heckler: 'Stop lying to the people' Jacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee MORE (D-N.Y.), who will be minority leader next year, had pledged to work with Trump on areas of common ground. He has also vowed to battle Trump when warranted, most notably on attempts to eradicate Obama's legacy laws.

Since the election, Schumer has called for Democrats to craft “a bold economic platform,” a clear acknowledgement that Clinton's muddled message was no match for Trump's “Make American Great Again.”