A judge can refuse bail on the following grounds:

• Danger to the community: If you are considered a danger to the community, bail may be refused.
• Tampering with evidence: If you are considered a threat to tamper with evidence, bail may be refused.
• Repeat offenses: If you have a history of repeated offenses or a history of failing to appear in court, bail may be refused.
• Serious offenses: If you have been charged with a serious offense, such as murder, bail may be refused.
• Flight risk: If you are determined to be a flight risk due to poor bond history of not showing up
• Breaking a court order: Wearing an electronic tracking device and going too close to the place or person that they should not be

These are general guidelines, and the specific circumstances of each case may be different.