Hullinghorst replaces Democrat Mark Ferrandino, who was term-limited.
While lawmakers seemed generally receptive to the governor's budget plan, disagreements loom over how to handle taxpayer rebates.
The newly elected state Senate President celebrated Republicans' 18-17 hold on the chamber by buying Peyton Manning jerseys for his whole caucus.
House Republicans call the declaration of victory "presumptuous."
The newly re-elected govenor says the close nature of the race won’t change his plans for next four years.
If lawmakers agree, state spending would go up by $1.7 billion in the fiscal year that starts next July.
Home improvements will eventually cost more with two new Colorado laws.
Representative Mark Ferrandino rose from a childhood in special education classes to become the first openly gay speaker of Colorado's House. As he departs due to term limits, Ferrandino looks back over his time in office.
State lawmakers tackle a broad spectrum of issues across 12 major topics in the 2014 legislative session.