Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.) fired the starting gun this week in the race for the Democratic Party's 2020 presidential nominating contest, putting pressure on other potential candidates weighing campaigns of their own.



The early entrance not only gives Warren a head start on hiring campaign staff and raising money, which will be crucial in a potentially long and crowded primary season, but it also provides ample opportunity for her to set the tenor of the nominating contest by staking out positions that could define the Democratic field.



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“It shows that if somebody is bold enough to go first, then that changes calendars and calculations for everybody else who is forming exploratory committees or thinking of doing so,” said Jon Reinish, a Democratic strategist.“This is akin to California moving its primary up,” he added. “It forces everybody to take another look.”

Democrats are expected to see one of the largest primary fields in history in 2020. Dozens of political giants, party elders and rising stars ranging from Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) to former Rep. Beto O’Rourke (D-Texas) are among those weighing White House runs.



Several would-be candidates — Sens. Kamala Harris Kamala HarrisNational postal mail handlers union endorses Biden The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally Jim Carrey to play Biden on 'Saturday Night Live' MORE (D-Calif.) and Kirsten Gillibrand Kirsten GillibrandSuburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits The Hill's Campaign Report: 19 years since 9/11 | Dem rival to Marjorie Taylor Greene drops out | Collin Peterson faces fight of his career | Court delivers blow to ex-felon voting rights in Florida MORE (D-N.Y.) among them — are expected to launch presidential bids in the coming weeks, and party officials in early primary states are anticipating a slew of visits from would-be candidates and their advisers.

Warren became the first major candidate to visit Iowa, the first state to vote in presidential nominating contests, over the weekend, making stops in Council Bluffs, Sioux City, Storm Lake and Des Moines.



The visit came days after the Massachusetts Democrat scooped up several key staffers in the Hawkeye State, including Brendan Summers, the former caucus director for Sanders’s 2016 presidential campaign, and Kane Miller, a longtime Iowa operative who managed Rep. Abby Finkenauer Abby Lea FinkenauerHouse Democrats' campaign arm reserves .6M in ads in competitive districts GOP leader says he doesn't want Chamber's endorsement: 'They have sold out' US Chamber of Commerce set to endorse 23 House freshman Democrats MORE’s (D-Iowa) successful campaign against former Rep. Rod Blum (R-Iowa.) last year.



The hires are an early example of how Democratic contenders are likely not only to compete for votes and media attention, but also aides and advisers with deep experience, especially in the crucial early primary states that can make or break a candidate’s White House ambitions.



For months, potential candidates and their advisers have been courting political operatives in states like Iowa and New Hampshire. Those talks have ramped up in recent weeks, according to people familiar with the conversations.



“Each campaign has to decide for themselves what works, but giving yourself enough runway to have those conversations and build those relationships is really important,” said Troy Price, the chair of the Iowa Democratic Party.



Warren’s hard-charging entrance into the Democratic nominating contest this week also gave her an early opportunity to define key parts of the progressive platform before other candidates throw their names into the running, Reinish said.



In an interview on MSNBC on Wednesday, Warren urged would-be Democratic contenders to reject campaign money from political action committees (PACs) and ultra-wealthy donors, and demanded that any billionaire candidates — Michael Bloomberg and Tom Steyer are two possible contenders — refrain from self-funding their campaigns.



“I think that she’s putting down a marker in an attempt to sort of predefine what the progressive stance is going to be,” Reinish said. “It sort of pre-creates a litmus test.”



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Warren’s trip to Iowa over the weekend may be the first major visit of the year to an early voting state. But a handful of Democrats are planning stops in the coming weeks.Steyer, for example, is set to travel to Des Moines next week for a town hall event to roll out part of the “5 Rights” platform he’s been touting since November.Steyer is still weighing whether to mount a White House bid, according to a person familiar with his thinking, who added that the billionaire philanthropist’s existing network of staffers and advisers at his nonprofits and PACs affords him more time to make a decision on 2020.Former Housing and Urban Development Secretary Julián Castro formed an exploratory committee last month ahead of a planned Jan. 12 announcement on whether he will seek the White House in 2020.Castro signaled on Friday that a presidential bid is all but certain, announcing that he will travel to New Hampshire, the first state to hold a primary, on Jan. 16.A number of other Democrats are expected to jump into the race soon, but few decisions are being watched as closely as that of former Vice President, who has said that he will announce whether he will run in the new year.

If he declares a bid for the Democratic nomination, Biden would enter the primary field with as one of the party’s most formidable contenders.



Since leaving office in 2017, the former vice president and Delaware senator has maintained a sweeping national profile through book tours, speaking engagements and campaign stops boosting Democratic candidates in the 2018 midterm elections.



While he’s expected to unveil a decision on a 2020 bid soon, any announcement is unlikely to come until at least next month. He said in November that January would be “too early to start” a campaign.