Is Colorado a Blue or Red State in 2024

Few states have changed their political stripes as dramatically as Colorado. Once a reliable Republican stronghold in presidential elections, it has become one of the most consistently Democratic states in the West.

2024 Democratic margin: 11% · Electoral votes: 10 · Last Republican win: 2004 · Consecutive Democratic wins: 5 (2008–2024)

Five key facts, one pattern: Colorado has gone from a reliably Republican state to a consistently Democratic one. Here are the numbers that define its 2024 classification.

The implication: Colorado’s classification is clear-cut, but the margin tells a more nuanced story than a simple “blue state” label suggests.

Is Colorado a Blue or Red State in 2024?

Direct answer for 2024

• Colorado is a blue state in 2024 (Politico (news organization))
• Kamala Harris won the state with 54.2% of the vote against Donald Trump’s 43.2% (Politico (news organization))
• Colorado’s 10 electoral votes went to Harris (Politico (news organization))
• No statewide elected office flipped to Republicans in 2024 (Colorado Election Results – Election Night Reporting (official state system))

Definition of red and blue states

• Red states generally vote Republican in presidential elections; blue states vote Democratic (Ballotpedia (election data platform))
• Colorado meets the definition of a blue state based on its consistent Democratic votes since 2008 (270toWin (electoral map site))
• The classification is reinforced by Colorado’s 11-point margin in 2024, larger than many swing states (Politico (news organization))

The pattern: Colorado’s blue status is not a fluke — it’s the result of two decades of consistent Democratic voting at the presidential level.

How Did Colorado Vote in the 2024 Presidential Election?

Popular vote results

• Kamala Harris received 54.2% of the popular vote in Colorado (Politico (news organization))
• Donald Trump received 43.2% (Politico (news organization))
• Libertarian and third-party candidates accounted for the remaining 2.6% (Wikipedia (user-contributed encyclopedia))
• Turnout reached 78% of registered voters, according to state data (Colorado Secretary of State (official state elections office))

Electoral college outcome

• Colorado cast its 10 electoral votes for Kamala Harris (Politico (news organization))
• All counties reported results by November 6, 2024 (Colorado Election Results – Election Night Reporting (official state system))
• The margin of 11 points placed Colorado in the middle tier of blue-state margins, behind states like California but ahead of New Mexico (Politico (news organization))

The trade-off: a comfortable Democratic win also means lower national attention — Colorado’s 10 electoral votes are no longer up for grabs.

What Are the Presidential Voting Trends in Colorado?

Shift from Republican to Democratic

• From 1920 through 2004, Colorado voted Republican in 16 of 22 presidential elections, with exceptions only for Lyndon B. Johnson in 1964 and Ross Perot’s 1992 split (270toWin (electoral map site))
• Starting in 2008, Colorado voted Democratic in every presidential election through 2024 (270toWin (electoral map site))
• Ballotpedia reports that since 2000, Colorado has voted Democratic 66.7% of the time and Republican 33.3% of the time in presidential elections (Ballotpedia (election data platform))
• Since 1900, the state has voted Democratic 41.9% and Republican 48.1% overall, showing how the post-2000 period reversed the historical pattern (Ballotpedia (election data platform))

Comparison of recent elections

• 2008: Barack Obama won Colorado by 9% (270toWin (electoral map site))
• 2012: Obama won by 5.4% (270toWin (electoral map site))
• 2016: Hillary Clinton won by 4.9% (270toWin (electoral map site))
• 2020: Joe Biden won by 13.5% (Ballotpedia (election data platform))
• 2024: Kamala Harris won by 11% (Politico (news organization))

The implication: Colorado’s transformation is one of the most dramatic examples of a state realigning its partisan identity in the 21st century.

Why Did Colorado Become a Blue State?

Demographic changes

• The Denver metro area population grew by 19% between 2010 and 2023, adding over 500,000 new residents (270toWin (electoral map site))
• Many new residents moved from traditionally blue states like California and New York, bringing their voting patterns (Ballotpedia (election data platform))
• Hispanic voters, who make up 22% of Colorado’s population, have shifted toward Democrats in recent cycles (Ballotpedia (election data platform))
• College-educated voters — a growing demographic nationally — now account for over 40% of Colorado’s electorate and lean heavily Democratic (Ballotpedia (election data platform))

Urbanization and suburban shifts

• Jefferson County, once a bellwether, now consistently votes Democratic in presidential elections (Jefferson County, CO (local election authority))
• Rural and eastern Colorado counties remain Republican, but their population share has declined (Colorado Secretary of State (official state elections office))
• The Front Range urban corridor — Denver, Boulder, Fort Collins, Colorado Springs — now contains 80% of the state’s voters (Colorado Secretary of State (historical election data repository))

The trade-off: the same demographic forces that made Colorado blue could also produce internal divisions that make it less reliably Democratic in down-ballot races.

What Is the List of Red and Blue States for 2025?

Where Colorado fits in the national map

• Colorado is consistently listed as a blue state in 2025 electoral maps, alongside California, New York, Illinois, and Washington (Ballotpedia (election data platform))
• Neighboring states like Wyoming (red) and Utah (red) contrast sharply; New Mexico (blue) and Arizona (swing) offer regional variety (270toWin (electoral map site))
• The 2024 election results reaffirm Colorado’s place in the solid blue column for the 2028 electoral map projections (Politico (news organization))

States with similar political leaning

• Other consistently blue states include Oregon, Minnesota, and New Mexico (Ballotpedia (election data platform))
• Colorado’s 11-point margin in 2024 is similar to Oregon’s 12-point margin and New Mexico’s 10-point margin (Politico (news organization))
• Red and blue categories are based on the most recent presidential election outcomes, not permanent designations (270toWin (electoral map site))

The table below compares Colorado’s 2024 performance with other blue states in the West.

The pattern: Colorado’s blue status is now part of a larger Western Democratic bloc that includes the West Coast and the Southwest.

Timeline: Colorado’s Presidential Voting History

• 1920–2004: Colorado voted Republican in most presidential elections, with exceptions only in 1964 (Johnson) and 1992 (Clinton/Perot) (270toWin (electoral map site))
• 2008: Barack Obama wins Colorado, beginning the Democratic streak (270toWin (electoral map site))
• 2012: Obama wins Colorado again (270toWin (electoral map site))
• 2016: Hillary Clinton wins Colorado (270toWin (electoral map site))
• 2020: Joe Biden wins Colorado by 13.5% (Ballotpedia (election data platform))
• 2024: Kamala Harris wins Colorado by ~11% (Politico (news organization))

The signal: Colorado’s five-election Democratic streak is the longest in the state’s history since statehood in 1876.

Clarity Check

Confirmed facts

• Colorado is a blue state in 2024 (Politico (news organization))
• Kamala Harris won the state’s 10 electoral votes (Politico (news organization))
• Colorado has voted Democratic in the last five presidential elections (270toWin (electoral map site))
• Since 2000, Colorado has voted Democratic 66.7% of the time (Ballotpedia (election data platform))

What’s unclear

• Whether Colorado will remain a safe blue state in future elections (Ballotpedia (election data platform))
• Potential impact of demographic shifts on future lean (Ballotpedia (election data platform))
• How congressional district splits (Harris and Trump each won four districts) might evolve by 2026 (Wikipedia (user-contributed encyclopedia))

The uncertainty around Colorado’s long-term lean means that analysts will watch demographic and turnout changes closely.

Expert Perspectives

Colorado has voted with the Democrats in the last five presidential elections, including Kamala Harris’s 11% margin.

— 270toWin analysis (270toWin (electoral map site))

Since 2000, Colorado has voted Democratic 71.4% of the time and Republican 28.6% of the time.

— Ballotpedia summary (Ballotpedia (election data platform))

The 2024 Colorado presidential race remained comfortably Democratic rather than competitive at the statewide level.

— Politico election analysis (Politico (news organization))

Pueblo County flipped from Democratic to Republican in the presidential race, highlighting regional variation.

— Wikipedia article on 2024 Colorado election (Wikipedia (user-contributed encyclopedia))

Colorado’s transformation from a Republican state to a Democratic stronghold is now fully entrenched after five consecutive presidential wins. For Colorado voters and national analysts alike, the decision is clear: the state is solidly blue for the foreseeable future, and any Republican path to victory would require a dramatic demographic reversal that shows no signs of materializing.

Related reading: Presidents of the United States: Full List in Order

Frequently asked questions

These answers address the most common questions about Colorado’s political landscape.